/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:30,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:30,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:30,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:30,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:30,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:30,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:30,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:30,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:30,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:30,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:30,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:30,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:30,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:30,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:30,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:30,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:30,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:30,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:30,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:30,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:30,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:30,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:30,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:30,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:30,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:30,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:30,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:30,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:30,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:30,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:30,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:30,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:30,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:30,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:30,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:30,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:30,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:30,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:30,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:30,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:30,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:38:30,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:30,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:30,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:30,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:30,461 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:30,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:30,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:30,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:30,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:30,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:30,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:30,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:30,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:30,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:30,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:30,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:30,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:30,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:30,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:30,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:30,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:30,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:30,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:30,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:30,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:30,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:30,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:30,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:30,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:30,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:38:30,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:31,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:31,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:31,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:31,016 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:31,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 05:38:31,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b40efc95/4b9df2e22ad64a14b746186628ef3127/FLAG0de881ff0 [2020-09-25 05:38:31,763 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:31,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 05:38:31,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b40efc95/4b9df2e22ad64a14b746186628ef3127/FLAG0de881ff0 [2020-09-25 05:38:31,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b40efc95/4b9df2e22ad64a14b746186628ef3127 [2020-09-25 05:38:32,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:32,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:32,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:32,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:32,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:32,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:31" (1/1) ... [2020-09-25 05:38:32,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a80955f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32, skipping insertion in model container [2020-09-25 05:38:32,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:31" (1/1) ... [2020-09-25 05:38:32,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:32,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:32,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:32,708 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:32,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:32,851 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:32,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32 WrapperNode [2020-09-25 05:38:32,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:32,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:32,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:32,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:32,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32" (1/1) ... [2020-09-25 05:38:32,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32" (1/1) ... [2020-09-25 05:38:32,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32" (1/1) ... [2020-09-25 05:38:32,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32" (1/1) ... [2020-09-25 05:38:32,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32" (1/1) ... [2020-09-25 05:38:32,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32" (1/1) ... [2020-09-25 05:38:32,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32" (1/1) ... [2020-09-25 05:38:32,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:32,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:32,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:32,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:32,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:33,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:33,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:33,055 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:33,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:34,594 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:34,594 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:34,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:34 BoogieIcfgContainer [2020-09-25 05:38:34,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:34,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:34,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:34,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:34,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:31" (1/3) ... [2020-09-25 05:38:34,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f42efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:34, skipping insertion in model container [2020-09-25 05:38:34,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:32" (2/3) ... [2020-09-25 05:38:34,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f42efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:34, skipping insertion in model container [2020-09-25 05:38:34,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:34" (3/3) ... [2020-09-25 05:38:34,617 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 05:38:34,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:34,645 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:34,674 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:34,722 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:34,723 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:34,723 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:34,724 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:34,724 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:34,724 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:34,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:34,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 05:38:34,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:34,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:34,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:34,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:34,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 05:38:34,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:34,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010321426] [2020-09-25 05:38:34,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:35,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:35,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:35,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:38:35,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:35,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-09-25 05:38:35,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:35,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:35,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:35,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:38:35,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:38:35,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:38:35,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:35,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:35,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:35,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:35,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:35,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:38:35,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:35,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:35,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:35,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:35,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:38:35,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:35,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010321426] [2020-09-25 05:38:35,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:35,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:38:35,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057748351] [2020-09-25 05:38:35,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:38:35,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:35,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:38:35,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:38:35,752 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:38:37,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:37,816 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 05:38:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:38:37,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 05:38:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:37,842 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 05:38:37,842 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 05:38:37,856 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 05:38:37,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 05:38:37,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 05:38:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 05:38:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 05:38:37,957 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 05:38:37,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:37,957 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 05:38:37,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:38:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 05:38:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 05:38:37,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:37,966 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 05:38:37,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:37,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:37,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:37,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 05:38:37,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:37,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833773266] [2020-09-25 05:38:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:38,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:39,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 05:38:39,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:38:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1702 [2020-09-25 05:38:39,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:39,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:38:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:38:39,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:39,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:39,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:39,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:39,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:38:39,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:39,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:39,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:40,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:40,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:38:40,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 05:38:40,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:40,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:38:40,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 05:38:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:40,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833773266] [2020-09-25 05:38:40,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:40,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:40,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812068099] [2020-09-25 05:38:40,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:40,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:40,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:40,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:40,095 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-25 05:38:42,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:42,099 INFO L93 Difference]: Finished difference Result 1417 states and 1827 transitions. [2020-09-25 05:38:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:42,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-25 05:38:42,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:42,107 INFO L225 Difference]: With dead ends: 1417 [2020-09-25 05:38:42,108 INFO L226 Difference]: Without dead ends: 889 [2020-09-25 05:38:42,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-09-25 05:38:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 849. [2020-09-25 05:38:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 05:38:42,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1040 transitions. [2020-09-25 05:38:42,165 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1040 transitions. Word has length 127 [2020-09-25 05:38:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:42,166 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1040 transitions. [2020-09-25 05:38:42,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1040 transitions. [2020-09-25 05:38:42,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 05:38:42,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:42,174 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:42,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:42,175 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:42,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:42,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1301933938, now seen corresponding path program 1 times [2020-09-25 05:38:42,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:42,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39168021] [2020-09-25 05:38:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:42,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:42,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:44,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 05:38:44,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:38:44,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2622 [2020-09-25 05:38:44,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:44,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:38:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:38:44,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:44,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:44,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:44,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:44,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:44,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:38:44,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:44,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:44,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:45,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:45,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:45,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:38:45,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 05:38:45,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:45,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:38:45,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:45,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39168021] [2020-09-25 05:38:45,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:45,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:45,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001218553] [2020-09-25 05:38:45,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:45,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:45,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:45,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:45,235 INFO L87 Difference]: Start difference. First operand 849 states and 1040 transitions. Second operand 6 states. [2020-09-25 05:38:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:50,512 INFO L93 Difference]: Finished difference Result 2809 states and 3611 transitions. [2020-09-25 05:38:50,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:50,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 05:38:50,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:50,534 INFO L225 Difference]: With dead ends: 2809 [2020-09-25 05:38:50,534 INFO L226 Difference]: Without dead ends: 1975 [2020-09-25 05:38:50,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-09-25 05:38:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1916. [2020-09-25 05:38:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2020-09-25 05:38:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2353 transitions. [2020-09-25 05:38:50,623 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2353 transitions. Word has length 138 [2020-09-25 05:38:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:50,624 INFO L479 AbstractCegarLoop]: Abstraction has 1916 states and 2353 transitions. [2020-09-25 05:38:50,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2353 transitions. [2020-09-25 05:38:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 05:38:50,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:50,641 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:50,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:50,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:50,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:50,641 INFO L82 PathProgramCache]: Analyzing trace with hash 342195782, now seen corresponding path program 1 times [2020-09-25 05:38:50,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:50,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017787459] [2020-09-25 05:38:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:51,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:55,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 05:38:55,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4414 [2020-09-25 05:38:55,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:55,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:55,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-09-25 05:38:55,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:38:55,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:55,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:55,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:38:55,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:55,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:55,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:55,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:55,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:55,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:38:55,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 05:38:55,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:55,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 05:38:55,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:55,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017787459] [2020-09-25 05:38:55,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:55,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:55,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166323208] [2020-09-25 05:38:55,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:55,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:55,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:55,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:55,509 INFO L87 Difference]: Start difference. First operand 1916 states and 2353 transitions. Second operand 5 states. [2020-09-25 05:38:57,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:57,892 INFO L93 Difference]: Finished difference Result 4963 states and 6301 transitions. [2020-09-25 05:38:57,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:57,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 05:38:57,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:57,910 INFO L225 Difference]: With dead ends: 4963 [2020-09-25 05:38:57,911 INFO L226 Difference]: Without dead ends: 3062 [2020-09-25 05:38:57,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2020-09-25 05:38:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3018. [2020-09-25 05:38:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3018 states. [2020-09-25 05:38:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3823 transitions. [2020-09-25 05:38:58,073 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3823 transitions. Word has length 155 [2020-09-25 05:38:58,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:58,074 INFO L479 AbstractCegarLoop]: Abstraction has 3018 states and 3823 transitions. [2020-09-25 05:38:58,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3823 transitions. [2020-09-25 05:38:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 05:38:58,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:58,078 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:58,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:58,079 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:58,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:58,079 INFO L82 PathProgramCache]: Analyzing trace with hash 350854071, now seen corresponding path program 1 times [2020-09-25 05:38:58,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:58,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625592381] [2020-09-25 05:38:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:58,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:03,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:03,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 05:39:03,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 05:39:03,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:03,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 05:39:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:39:03,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:03,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:03,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:03,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:03,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:03,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:39:03,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:03,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:03,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:03,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:03,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:03,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:03,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 05:39:03,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 05:39:03,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:03,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 05:39:03,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:03,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625592381] [2020-09-25 05:39:03,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:03,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:03,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982036949] [2020-09-25 05:39:03,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:03,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:03,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:03,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:03,470 INFO L87 Difference]: Start difference. First operand 3018 states and 3823 transitions. Second operand 5 states. [2020-09-25 05:39:06,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:06,240 INFO L93 Difference]: Finished difference Result 7170 states and 9252 transitions. [2020-09-25 05:39:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:06,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-09-25 05:39:06,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:06,265 INFO L225 Difference]: With dead ends: 7170 [2020-09-25 05:39:06,266 INFO L226 Difference]: Without dead ends: 4167 [2020-09-25 05:39:06,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2020-09-25 05:39:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 4125. [2020-09-25 05:39:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4125 states. [2020-09-25 05:39:06,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 5313 transitions. [2020-09-25 05:39:06,410 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 5313 transitions. Word has length 174 [2020-09-25 05:39:06,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:06,411 INFO L479 AbstractCegarLoop]: Abstraction has 4125 states and 5313 transitions. [2020-09-25 05:39:06,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 5313 transitions. [2020-09-25 05:39:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 05:39:06,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:06,415 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:06,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:06,416 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:06,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1769309583, now seen corresponding path program 1 times [2020-09-25 05:39:06,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:06,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233792257] [2020-09-25 05:39:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:06,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:06,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:07,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:11,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 05:39:11,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:39:11,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:11,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-09-25 05:39:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:39:11,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:11,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:11,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:11,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:11,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:11,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:11,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:11,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:11,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:11,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:11,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:11,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 05:39:11,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 05:39:11,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:11,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:11,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 05:39:11,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:11,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233792257] [2020-09-25 05:39:11,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:11,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:11,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121630555] [2020-09-25 05:39:11,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:11,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:11,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:11,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:11,759 INFO L87 Difference]: Start difference. First operand 4125 states and 5313 transitions. Second operand 5 states. [2020-09-25 05:39:14,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:14,452 INFO L93 Difference]: Finished difference Result 9475 states and 12567 transitions. [2020-09-25 05:39:14,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:14,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-09-25 05:39:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:14,481 INFO L225 Difference]: With dead ends: 9475 [2020-09-25 05:39:14,481 INFO L226 Difference]: Without dead ends: 5365 [2020-09-25 05:39:14,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:14,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5365 states. [2020-09-25 05:39:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5365 to 4891. [2020-09-25 05:39:14,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4891 states. [2020-09-25 05:39:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4891 states to 4891 states and 6273 transitions. [2020-09-25 05:39:14,671 INFO L78 Accepts]: Start accepts. Automaton has 4891 states and 6273 transitions. Word has length 176 [2020-09-25 05:39:14,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:14,672 INFO L479 AbstractCegarLoop]: Abstraction has 4891 states and 6273 transitions. [2020-09-25 05:39:14,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4891 states and 6273 transitions. [2020-09-25 05:39:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 05:39:14,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:14,682 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:14,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:39:14,683 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:14,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2024924357, now seen corresponding path program 1 times [2020-09-25 05:39:14,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:14,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168447014] [2020-09-25 05:39:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:15,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking...