/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:25,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:25,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:25,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:25,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:25,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:25,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:25,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:25,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:25,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:25,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:25,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:25,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:25,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:25,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:25,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:25,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:25,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:25,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:25,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:25,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:25,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:25,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:25,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:25,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:25,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:25,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:25,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:25,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:25,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:25,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:25,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:25,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:25,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:25,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:25,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:25,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:25,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:25,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:25,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:25,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:25,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:26:25,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:25,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:25,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:25,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:25,390 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:25,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:25,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:25,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:25,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:25,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:25,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:25,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:25,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:25,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:25,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:25,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:25,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:25,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:25,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:25,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:25,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:25,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:25,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:25,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:25,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:25,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:25,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:25,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:25,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:25,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:26:25,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:25,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:25,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:25,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:25,895 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:25,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-25 12:26:25,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/720375611/595d89d43445453f8543ea8b9768fe2b/FLAG4dcf527b5 [2020-09-25 12:26:26,585 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:26,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-25 12:26:26,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/720375611/595d89d43445453f8543ea8b9768fe2b/FLAG4dcf527b5 [2020-09-25 12:26:26,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/720375611/595d89d43445453f8543ea8b9768fe2b [2020-09-25 12:26:26,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:26,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:26,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:26,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:26,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:26,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:26" (1/1) ... [2020-09-25 12:26:26,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4231a4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:26, skipping insertion in model container [2020-09-25 12:26:26,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:26" (1/1) ... [2020-09-25 12:26:26,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:26,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:27,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:27,443 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:27,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:27,695 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:27,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27 WrapperNode [2020-09-25 12:26:27,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:27,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:27,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:27,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:27,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27" (1/1) ... [2020-09-25 12:26:27,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27" (1/1) ... [2020-09-25 12:26:27,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27" (1/1) ... [2020-09-25 12:26:27,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27" (1/1) ... [2020-09-25 12:26:27,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27" (1/1) ... [2020-09-25 12:26:27,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27" (1/1) ... [2020-09-25 12:26:27,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27" (1/1) ... [2020-09-25 12:26:27,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:27,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:27,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:27,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:27,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:27,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:27,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:27,964 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:27,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:27,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:27,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:29,587 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:29,588 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:29,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:29 BoogieIcfgContainer [2020-09-25 12:26:29,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:29,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:29,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:29,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:29,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:26" (1/3) ... [2020-09-25 12:26:29,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d137393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:29, skipping insertion in model container [2020-09-25 12:26:29,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27" (2/3) ... [2020-09-25 12:26:29,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d137393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:29, skipping insertion in model container [2020-09-25 12:26:29,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:29" (3/3) ... [2020-09-25 12:26:29,606 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label15.c [2020-09-25 12:26:29,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:29,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:29,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:29,683 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:29,684 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:29,684 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:29,684 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:29,684 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:29,684 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:29,684 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:29,685 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 12:26:29,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:29,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:29,725 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:29,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:29,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1814812065, now seen corresponding path program 1 times [2020-09-25 12:26:29,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:29,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060294706] [2020-09-25 12:26:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:30,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:26:30,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-09-25 12:26:30,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:30,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:30,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:30,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:26:30,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:26:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:30,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:30,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:26:30,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:30,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:30,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060294706] [2020-09-25 12:26:30,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:30,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:30,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707627955] [2020-09-25 12:26:30,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:30,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:30,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:30,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:30,571 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:32,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:32,457 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 12:26:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:32,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 12:26:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:32,497 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 12:26:32,498 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 12:26:32,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:32,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 12:26:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 12:26:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 12:26:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 12:26:32,625 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 29 [2020-09-25 12:26:32,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:32,625 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 12:26:32,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 12:26:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 12:26:32,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:32,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:32,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:32,632 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:32,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1743569131, now seen corresponding path program 1 times [2020-09-25 12:26:32,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:32,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81160642] [2020-09-25 12:26:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:32,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:34,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 12:26:34,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:34,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1951 [2020-09-25 12:26:34,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:34,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:26:34,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:34,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:34,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:34,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:34,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:26:34,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:34,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:34,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:34,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:34,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:26:34,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:34,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 12:26:34,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:34,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:34,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:26:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:35,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81160642] [2020-09-25 12:26:35,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:35,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:26:35,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520945538] [2020-09-25 12:26:35,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:35,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:35,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:35,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:35,027 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 12:26:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:36,990 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-25 12:26:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:26:36,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-09-25 12:26:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:36,995 INFO L225 Difference]: With dead ends: 1258 [2020-09-25 12:26:36,996 INFO L226 Difference]: Without dead ends: 730 [2020-09-25 12:26:36,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-25 12:26:37,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-25 12:26:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 12:26:37,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-25 12:26:37,064 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 109 [2020-09-25 12:26:37,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:37,067 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-25 12:26:37,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:37,067 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-25 12:26:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 12:26:37,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:37,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:37,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:37,082 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:37,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:37,086 INFO L82 PathProgramCache]: Analyzing trace with hash -162546798, now seen corresponding path program 1 times [2020-09-25 12:26:37,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:37,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886450169] [2020-09-25 12:26:37,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:37,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:40,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:40,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 12:26:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3019 [2020-09-25 12:26:40,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:40,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 12:26:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:40,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:40,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:40,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:40,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:40,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:40,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 12:26:40,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:40,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:40,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:40,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:40,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:40,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 12:26:40,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:40,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:40,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886450169] [2020-09-25 12:26:40,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:40,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:40,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564517035] [2020-09-25 12:26:40,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:40,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:40,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:40,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:40,584 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 8 states. [2020-09-25 12:26:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:43,626 INFO L93 Difference]: Finished difference Result 1635 states and 2066 transitions. [2020-09-25 12:26:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:26:43,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-09-25 12:26:43,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:43,638 INFO L225 Difference]: With dead ends: 1635 [2020-09-25 12:26:43,639 INFO L226 Difference]: Without dead ends: 1101 [2020-09-25 12:26:43,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:26:43,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-25 12:26:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1046. [2020-09-25 12:26:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 12:26:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1270 transitions. [2020-09-25 12:26:43,688 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1270 transitions. Word has length 118 [2020-09-25 12:26:43,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:43,694 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1270 transitions. [2020-09-25 12:26:43,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:43,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1270 transitions. [2020-09-25 12:26:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 12:26:43,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:43,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:43,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:43,698 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:43,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:43,698 INFO L82 PathProgramCache]: Analyzing trace with hash -878375990, now seen corresponding path program 1 times [2020-09-25 12:26:43,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:43,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148748829] [2020-09-25 12:26:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:43,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:44,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:44,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:26:44,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:44,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-09-25 12:26:44,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:44,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:26:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:26:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:45,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:45,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:45,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:45,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:45,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:26:45,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:45,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:26:45,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:45,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:45,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:45,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:45,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:26:45,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:45,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 12:26:45,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:45,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:26:45,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:45,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148748829] [2020-09-25 12:26:45,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:45,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:26:45,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846927416] [2020-09-25 12:26:45,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:45,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:45,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:45,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:45,387 INFO L87 Difference]: Start difference. First operand 1046 states and 1270 transitions. Second operand 8 states. [2020-09-25 12:26:48,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:48,141 INFO L93 Difference]: Finished difference Result 3060 states and 3984 transitions. [2020-09-25 12:26:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:26:48,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-09-25 12:26:48,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:48,152 INFO L225 Difference]: With dead ends: 3060 [2020-09-25 12:26:48,153 INFO L226 Difference]: Without dead ends: 2188 [2020-09-25 12:26:48,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:26:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2020-09-25 12:26:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2140. [2020-09-25 12:26:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2140 states. [2020-09-25 12:26:48,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2620 transitions. [2020-09-25 12:26:48,229 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2620 transitions. Word has length 120 [2020-09-25 12:26:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:48,230 INFO L479 AbstractCegarLoop]: Abstraction has 2140 states and 2620 transitions. [2020-09-25 12:26:48,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2620 transitions. [2020-09-25 12:26:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 12:26:48,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:48,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:48,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:48,234 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:48,235 INFO L82 PathProgramCache]: Analyzing trace with hash 472241825, now seen corresponding path program 1 times [2020-09-25 12:26:48,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:48,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719900166] [2020-09-25 12:26:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:48,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:49,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:53,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 12:26:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:26:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-09-25 12:26:53,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:53,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:26:53,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:53,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:53,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:53,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:53,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:26:53,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:53,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:53,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:53,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:53,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:53,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 12:26:53,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:53,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:53,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:53,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:26:53,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:53,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:53,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:53,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:53,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 12:26:53,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:53,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 92 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:26:54,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719900166] [2020-09-25 12:26:54,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:54,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:26:54,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713463760] [2020-09-25 12:26:54,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:26:54,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:54,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:26:54,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:54,020 INFO L87 Difference]: Start difference. First operand 2140 states and 2620 transitions. Second operand 10 states. [2020-09-25 12:26:56,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:56,746 INFO L93 Difference]: Finished difference Result 4036 states and 5104 transitions. [2020-09-25 12:26:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:26:56,749 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 197 [2020-09-25 12:26:56,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:56,766 INFO L225 Difference]: With dead ends: 4036 [2020-09-25 12:26:56,767 INFO L226 Difference]: Without dead ends: 2856 [2020-09-25 12:26:56,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:26:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2020-09-25 12:26:56,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2664. [2020-09-25 12:26:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-09-25 12:26:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3252 transitions. [2020-09-25 12:26:56,895 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3252 transitions. Word has length 197 [2020-09-25 12:26:56,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:56,896 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 3252 transitions. [2020-09-25 12:26:56,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:26:56,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3252 transitions. [2020-09-25 12:26:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 12:26:56,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:56,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:56,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:56,900 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:56,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:56,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1668861196, now seen corresponding path program 1 times [2020-09-25 12:26:56,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:56,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034493541] [2020-09-25 12:26:56,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:01,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 12:27:01,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:27:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 12:27:01,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:01,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:27:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 12:27:01,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:02,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:02,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:02,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:02,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:27:02,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:02,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:02,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:02,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:02,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:02,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:02,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:02,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:02,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 12:27:02,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:02,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:02,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:02,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:02,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:02,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:27:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:02,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:02,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:02,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:02,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:02,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 12:27:02,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:02,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:02,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:02,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:02,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:27:02,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 36 proven. 68 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:02,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034493541] [2020-09-25 12:27:02,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:02,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:27:02,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096790907] [2020-09-25 12:27:02,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:27:02,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:02,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:27:02,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:27:02,802 INFO L87 Difference]: Start difference. First operand 2664 states and 3252 transitions. Second operand 11 states. [2020-09-25 12:27:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:07,066 INFO L93 Difference]: Finished difference Result 6180 states and 7917 transitions. [2020-09-25 12:27:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 12:27:07,069 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 201 [2020-09-25 12:27:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:07,088 INFO L225 Difference]: With dead ends: 6180 [2020-09-25 12:27:07,088 INFO L226 Difference]: Without dead ends: 3701 [2020-09-25 12:27:07,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2020-09-25 12:27:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2020-09-25 12:27:07,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 3317. [2020-09-25 12:27:07,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3317 states. [2020-09-25 12:27:07,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4168 transitions. [2020-09-25 12:27:07,179 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4168 transitions. Word has length 201 [2020-09-25 12:27:07,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:07,180 INFO L479 AbstractCegarLoop]: Abstraction has 3317 states and 4168 transitions. [2020-09-25 12:27:07,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:27:07,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4168 transitions. [2020-09-25 12:27:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 12:27:07,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:07,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:07,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:27:07,185 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:07,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:07,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2145286015, now seen corresponding path program 1 times [2020-09-25 12:27:07,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:07,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38564997] [2020-09-25 12:27:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:07,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:07,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:12,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 12:27:12,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:27:12,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:27:12,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:12,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:12,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:27:12,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:27:12,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 12:27:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:12,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:12,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:12,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:12,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:27:12,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:12,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:27:12,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:12,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:12,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:12,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:12,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 12:27:12,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:12,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:12,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:12,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:12,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:27:12,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:12,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:27:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:12,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 12:27:12,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 12:27:12,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:12,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:12,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 12:27:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:12,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38564997] [2020-09-25 12:27:12,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:12,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:27:12,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434234966] [2020-09-25 12:27:12,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:27:12,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:12,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:27:12,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:12,949 INFO L87 Difference]: Start difference. First operand 3317 states and 4168 transitions. Second operand 10 states.