/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=NARROWEST --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_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:14:46,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:14:46,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:14:46,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:14:46,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:14:46,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:14:46,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:14:46,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:14:46,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:14:46,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:14:46,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:14:46,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:14:46,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:14:46,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:14:46,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:14:46,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:14:46,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:14:46,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:14:46,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:14:46,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:14:46,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:14:46,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:14:46,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:14:46,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:14:46,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:14:46,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:14:46,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:14:46,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:14:46,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:14:46,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:14:46,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:14:46,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:14:46,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:14:46,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:14:46,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:14:46,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:14:46,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:14:46,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:14:46,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:14:46,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:14:46,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:14:46,311 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 02:14:46,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:14:46,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:14:46,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:14:46,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:14:46,368 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:14:46,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:14:46,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:14:46,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:14:46,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:14:46,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:14:46,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:14:46,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:14:46,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:14:46,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:14:46,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:14:46,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:14:46,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:14:46,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:14:46,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:14:46,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:14:46,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:14:46,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:14:46,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:14:46,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:14:46,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:14:46,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:14:46,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:14:46,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:14:46,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:14:46,373 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:14:46,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:14:46,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:14:46,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:14:46,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:14:46,893 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:14:46,894 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 02:14:46,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cef446d13/7c719aa7dc104331b5aa8babbfa9b2eb/FLAG34b2d29be [2020-09-25 02:14:47,602 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:14:47,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 02:14:47,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cef446d13/7c719aa7dc104331b5aa8babbfa9b2eb/FLAG34b2d29be [2020-09-25 02:14:47,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cef446d13/7c719aa7dc104331b5aa8babbfa9b2eb [2020-09-25 02:14:47,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:14:47,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:14:47,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:14:47,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:14:47,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:14:47,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:14:47" (1/1) ... [2020-09-25 02:14:47,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3028f779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:47, skipping insertion in model container [2020-09-25 02:14:47,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:14:47" (1/1) ... [2020-09-25 02:14:47,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:14:47,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:14:48,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:14:48,576 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:14:48,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:14:48,748 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:14:48,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:48 WrapperNode [2020-09-25 02:14:48,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:14:48,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:14:48,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:14:48,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:14:48,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:48" (1/1) ... [2020-09-25 02:14:48,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:48" (1/1) ... [2020-09-25 02:14:48,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:48" (1/1) ... [2020-09-25 02:14:48,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:48" (1/1) ... [2020-09-25 02:14:48,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:48" (1/1) ... [2020-09-25 02:14:48,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:48" (1/1) ... [2020-09-25 02:14:48,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:48" (1/1) ... [2020-09-25 02:14:48,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:14:48,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:14:48,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:14:48,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:14:48,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:48" (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 02:14:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:14:48,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:14:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 02:14:48,980 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:14:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 02:14:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:14:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:14:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:14:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:14:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:14:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:14:50,387 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:14:50,388 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:14:50,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:14:50 BoogieIcfgContainer [2020-09-25 02:14:50,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:14:50,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:14:50,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:14:50,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:14:50,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:14:47" (1/3) ... [2020-09-25 02:14:50,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f07b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:14:50, skipping insertion in model container [2020-09-25 02:14:50,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:14:48" (2/3) ... [2020-09-25 02:14:50,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f07b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:14:50, skipping insertion in model container [2020-09-25 02:14:50,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:14:50" (3/3) ... [2020-09-25 02:14:50,408 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-09-25 02:14:50,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:14:50,435 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:14:50,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:14:50,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:14:50,497 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:14:50,498 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:14:50,498 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:14:50,498 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:14:50,498 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:14:50,498 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:14:50,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:14:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 02:14:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 02:14:50,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:50,542 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, 1, 1, 1, 1] [2020-09-25 02:14:50,543 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:50,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1024488521, now seen corresponding path program 1 times [2020-09-25 02:14:50,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:50,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008997976] [2020-09-25 02:14:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:51,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:51,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:51,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:14:51,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:14:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-09-25 02:14:51,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:14:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:14:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 02:14:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:14:51,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:14:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:51,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:14:51,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:14:51,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:14:51,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:14:51,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:14:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:14:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:14:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:14:51,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:14:51,920 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 02:14:51,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008997976] [2020-09-25 02:14:51,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:14:51,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:14:51,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422216889] [2020-09-25 02:14:51,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:14:51,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:14:51,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:14:51,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:14:51,966 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 02:14:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:14:54,863 INFO L93 Difference]: Finished difference Result 1256 states and 1826 transitions. [2020-09-25 02:14:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:14:54,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-25 02:14:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:14:54,903 INFO L225 Difference]: With dead ends: 1256 [2020-09-25 02:14:54,903 INFO L226 Difference]: Without dead ends: 737 [2020-09-25 02:14:54,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:14:54,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-09-25 02:14:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 697. [2020-09-25 02:14:55,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 02:14:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 864 transitions. [2020-09-25 02:14:55,040 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 864 transitions. Word has length 51 [2020-09-25 02:14:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:14:55,041 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 864 transitions. [2020-09-25 02:14:55,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:14:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 864 transitions. [2020-09-25 02:14:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 02:14:55,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:14:55,050 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, 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] [2020-09-25 02:14:55,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:14:55,051 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:14:55,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:14:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1234177337, now seen corresponding path program 1 times [2020-09-25 02:14:55,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:14:55,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114800125] [2020-09-25 02:14:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:14:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:14:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:14:56,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:00,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 02:15:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:15:00,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 02:15:00,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 02:15:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 02:15:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:00,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:00,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:00,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:15:00,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:15:00,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:00,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:15:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:00,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:00,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:00,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 02:15:00,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:00,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 02:15:00,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:00,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 02:15:00,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 02:15:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:15:00,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114800125] [2020-09-25 02:15:00,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:15:00,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:15:00,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931068500] [2020-09-25 02:15:00,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:15:00,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:00,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:15:00,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:15:00,697 INFO L87 Difference]: Start difference. First operand 697 states and 864 transitions. Second operand 5 states. [2020-09-25 02:15:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:15:02,774 INFO L93 Difference]: Finished difference Result 1893 states and 2426 transitions. [2020-09-25 02:15:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:15:02,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 02:15:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:15:02,783 INFO L225 Difference]: With dead ends: 1893 [2020-09-25 02:15:02,783 INFO L226 Difference]: Without dead ends: 1211 [2020-09-25 02:15:02,787 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 02:15:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2020-09-25 02:15:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1030. [2020-09-25 02:15:02,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-09-25 02:15:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1257 transitions. [2020-09-25 02:15:02,840 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1257 transitions. Word has length 147 [2020-09-25 02:15:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:15:02,842 INFO L479 AbstractCegarLoop]: Abstraction has 1030 states and 1257 transitions. [2020-09-25 02:15:02,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:15:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1257 transitions. [2020-09-25 02:15:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 02:15:02,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:02,847 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, 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] [2020-09-25 02:15:02,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:15:02,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:02,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:02,847 INFO L82 PathProgramCache]: Analyzing trace with hash 144855952, now seen corresponding path program 1 times [2020-09-25 02:15:02,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:02,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545882143] [2020-09-25 02:15:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:04,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:04,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 02:15:04,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:15:04,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-09-25 02:15:04,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-25 02:15:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 02:15:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:04,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:04,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:04,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:15:04,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:04,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:15:04,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:04,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:15:04,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:15:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:04,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:15:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 02:15:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 02:15:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:15:04,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545882143] [2020-09-25 02:15:04,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:15:04,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:15:04,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567284609] [2020-09-25 02:15:04,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:15:04,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:04,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:15:04,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:15:04,517 INFO L87 Difference]: Start difference. First operand 1030 states and 1257 transitions. Second operand 5 states. [2020-09-25 02:15:06,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:15:06,152 INFO L93 Difference]: Finished difference Result 2511 states and 3187 transitions. [2020-09-25 02:15:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:15:06,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 02:15:06,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:15:06,167 INFO L225 Difference]: With dead ends: 2511 [2020-09-25 02:15:06,168 INFO L226 Difference]: Without dead ends: 1496 [2020-09-25 02:15:06,173 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 02:15:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-09-25 02:15:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1486. [2020-09-25 02:15:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1486 states. [2020-09-25 02:15:06,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1834 transitions. [2020-09-25 02:15:06,249 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1834 transitions. Word has length 156 [2020-09-25 02:15:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:15:06,252 INFO L479 AbstractCegarLoop]: Abstraction has 1486 states and 1834 transitions. [2020-09-25 02:15:06,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:15:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1834 transitions. [2020-09-25 02:15:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 02:15:06,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:06,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 02:15:06,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:15:06,270 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:06,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1115685188, now seen corresponding path program 1 times [2020-09-25 02:15:06,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:06,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090493648] [2020-09-25 02:15:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:06,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:11,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:11,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 02:15:11,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:15:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 02:15:11,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-25 02:15:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 02:15:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:11,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:11,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:15:11,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:15:11,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:11,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:15:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:11,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:11,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:11,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 02:15:11,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:11,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 02:15:11,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:11,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:11,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 02:15:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:11,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:11,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 02:15:11,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:11,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 02:15:11,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:11,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:11,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 02:15:11,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-09-25 02:15:11,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090493648] [2020-09-25 02:15:11,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:15:11,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:15:11,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810386450] [2020-09-25 02:15:11,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:15:11,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:11,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:15:11,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:15:11,674 INFO L87 Difference]: Start difference. First operand 1486 states and 1834 transitions. Second operand 5 states. [2020-09-25 02:15:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:15:13,677 INFO L93 Difference]: Finished difference Result 3423 states and 4326 transitions. [2020-09-25 02:15:13,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:15:13,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-09-25 02:15:13,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:15:13,689 INFO L225 Difference]: With dead ends: 3423 [2020-09-25 02:15:13,689 INFO L226 Difference]: Without dead ends: 1462 [2020-09-25 02:15:13,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:15:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2020-09-25 02:15:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1452. [2020-09-25 02:15:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-09-25 02:15:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1758 transitions. [2020-09-25 02:15:13,738 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1758 transitions. Word has length 254 [2020-09-25 02:15:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:15:13,739 INFO L479 AbstractCegarLoop]: Abstraction has 1452 states and 1758 transitions. [2020-09-25 02:15:13,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:15:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1758 transitions. [2020-09-25 02:15:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-09-25 02:15:13,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:13,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:13,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:15:13,748 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:13,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:13,748 INFO L82 PathProgramCache]: Analyzing trace with hash 464155458, now seen corresponding path program 1 times [2020-09-25 02:15:13,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:13,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3638799] [2020-09-25 02:15:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:14,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:14,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:14,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:16,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:18,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:18,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-09-25 02:15:18,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:15:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:15:18,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 02:15:18,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 02:15:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:18,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:18,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:15:18,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:15:18,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:18,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:15:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:18,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:18,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 02:15:18,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:18,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 02:15:18,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:18,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:18,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:18,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 02:15:18,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:19,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 02:15:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:19,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:19,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 02:15:19,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:19,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 02:15:19,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:15:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:15:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:19,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-25 02:15:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:19,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:19,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 02:15:19,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:19,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 02:15:19,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 02:15:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:19,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 188 proven. 71 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-25 02:15:19,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3638799] [2020-09-25 02:15:19,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:15:19,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:15:19,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919524844] [2020-09-25 02:15:19,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:15:19,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:19,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:15:19,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:15:19,562 INFO L87 Difference]: Start difference. First operand 1452 states and 1758 transitions. Second operand 7 states. [2020-09-25 02:15:21,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:15:21,781 INFO L93 Difference]: Finished difference Result 3403 states and 4198 transitions. [2020-09-25 02:15:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:15:21,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-09-25 02:15:21,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:15:21,795 INFO L225 Difference]: With dead ends: 3403 [2020-09-25 02:15:21,796 INFO L226 Difference]: Without dead ends: 1966 [2020-09-25 02:15:21,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:15:21,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2020-09-25 02:15:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1784. [2020-09-25 02:15:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1784 states. [2020-09-25 02:15:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2139 transitions. [2020-09-25 02:15:21,867 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2139 transitions. Word has length 345 [2020-09-25 02:15:21,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:15:21,868 INFO L479 AbstractCegarLoop]: Abstraction has 1784 states and 2139 transitions. [2020-09-25 02:15:21,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:15:21,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2139 transitions. [2020-09-25 02:15:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-09-25 02:15:21,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:21,878 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 02:15:21,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:15:21,878 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:21,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:21,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1882410063, now seen corresponding path program 1 times [2020-09-25 02:15:21,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:21,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978825157] [2020-09-25 02:15:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:21,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:22,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:26,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:26,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-09-25 02:15:26,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:15:26,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 02:15:26,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 02:15:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 02:15:26,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:27,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:27,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:27,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:15:27,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:15:27,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:27,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:27,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 02:15:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:27,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:27,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:27,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 02:15:27,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 02:15:27,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 02:15:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:27,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 02:15:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:27,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:27,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:27,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 02:15:27,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 02:15:27,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:15:27,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 02:15:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-25 02:15:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:27,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:27,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 02:15:27,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:27,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 02:15:27,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:27,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 02:15:27,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:27,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 190 proven. 71 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-25 02:15:27,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978825157] [2020-09-25 02:15:27,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:15:27,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:15:27,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021123485] [2020-09-25 02:15:27,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:15:27,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:27,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:15:27,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:15:27,764 INFO L87 Difference]: Start difference. First operand 1784 states and 2139 transitions. Second operand 8 states. [2020-09-25 02:15:30,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:15:30,749 INFO L93 Difference]: Finished difference Result 4063 states and 4972 transitions. [2020-09-25 02:15:30,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:15:30,750 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 352 [2020-09-25 02:15:30,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:15:30,761 INFO L225 Difference]: With dead ends: 4063 [2020-09-25 02:15:30,762 INFO L226 Difference]: Without dead ends: 2294 [2020-09-25 02:15:30,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:15:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2020-09-25 02:15:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2092. [2020-09-25 02:15:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2092 states. [2020-09-25 02:15:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 2414 transitions. [2020-09-25 02:15:30,823 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 2414 transitions. Word has length 352 [2020-09-25 02:15:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:15:30,823 INFO L479 AbstractCegarLoop]: Abstraction has 2092 states and 2414 transitions. [2020-09-25 02:15:30,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:15:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 2414 transitions. [2020-09-25 02:15:30,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-09-25 02:15:30,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:30,834 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:30,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:15:30,834 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:30,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:30,835 INFO L82 PathProgramCache]: Analyzing trace with hash 561082850, now seen corresponding path program 1 times [2020-09-25 02:15:30,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:30,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21855793] [2020-09-25 02:15:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:32,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking...