/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Problem01_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:25:14,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:25:14,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:25:14,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:25:14,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:25:14,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:25:14,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:25:14,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:25:14,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:25:14,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:25:14,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:25:14,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:25:14,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:25:14,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:25:14,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:25:14,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:25:14,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:25:14,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:25:14,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:25:14,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:25:14,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:25:14,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:25:14,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:25:14,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:25:14,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:25:14,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:25:14,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:25:14,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:25:14,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:25:14,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:25:14,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:25:14,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:25:14,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:25:14,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:25:14,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:25:14,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:25:14,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:25:14,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:25:14,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:25:14,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:25:14,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:25:14,419 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 [2020-09-24 19:25:14,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:25:14,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:25:14,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:25:14,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:25:14,447 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:25:14,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:25:14,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:25:14,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:25:14,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:25:14,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:25:14,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:25:14,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:25:14,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:25:14,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:25:14,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:25:14,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:25:14,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:25:14,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:25:14,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:25:14,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:25:14,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:25:14,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:25:14,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:25:14,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:25:14,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:25:14,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:25:14,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:25:14,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:25:14,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:25:14,452 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:25:14,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:25:14,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:25:14,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:25:14,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:25:14,930 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:25:14,931 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-24 19:25:15,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48df2d412/d292ed7998214bbb91641d876d6e704e/FLAGa31f28ed1 [2020-09-24 19:25:15,697 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:25:15,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-24 19:25:15,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48df2d412/d292ed7998214bbb91641d876d6e704e/FLAGa31f28ed1 [2020-09-24 19:25:15,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48df2d412/d292ed7998214bbb91641d876d6e704e [2020-09-24 19:25:15,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:25:15,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:25:15,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:25:15,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:25:15,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:25:15,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:25:15" (1/1) ... [2020-09-24 19:25:15,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582ac9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:15, skipping insertion in model container [2020-09-24 19:25:15,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:25:15" (1/1) ... [2020-09-24 19:25:15,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:25:16,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:25:16,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:25:16,578 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:25:16,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:25:16,861 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:25:16,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:16 WrapperNode [2020-09-24 19:25:16,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:25:16,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:25:16,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:25:16,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:25:16,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:16" (1/1) ... [2020-09-24 19:25:16,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:16" (1/1) ... [2020-09-24 19:25:16,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:16" (1/1) ... [2020-09-24 19:25:16,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:16" (1/1) ... [2020-09-24 19:25:16,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:16" (1/1) ... [2020-09-24 19:25:17,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:16" (1/1) ... [2020-09-24 19:25:17,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:16" (1/1) ... [2020-09-24 19:25:17,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:25:17,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:25:17,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:25:17,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:25:17,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:16" (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 [2020-09-24 19:25:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:25:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:25:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:25:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:25:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:25:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:25:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:25:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:25:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:25:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:25:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:25:18,521 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:25:18,521 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:25:18,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:25:18 BoogieIcfgContainer [2020-09-24 19:25:18,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:25:18,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:25:18,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:25:18,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:25:18,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:25:15" (1/3) ... [2020-09-24 19:25:18,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd0e3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:25:18, skipping insertion in model container [2020-09-24 19:25:18,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:16" (2/3) ... [2020-09-24 19:25:18,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd0e3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:25:18, skipping insertion in model container [2020-09-24 19:25:18,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:25:18" (3/3) ... [2020-09-24 19:25:18,543 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2020-09-24 19:25:18,556 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:25:18,569 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:25:18,592 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:25:18,639 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:25:18,640 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:25:18,640 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:25:18,640 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:25:18,641 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:25:18,641 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:25:18,641 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:25:18,641 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:25:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:25:18,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 19:25:18,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:18,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:18,705 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:18,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:18,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1844135333, now seen corresponding path program 1 times [2020-09-24 19:25:18,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:18,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321804430] [2020-09-24 19:25:18,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 19:25:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:25:20,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:25:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-24 19:25:20,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:25:20,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:20,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:20,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:20,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:25:20,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:25:20,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:20,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321804430] [2020-09-24 19:25:20,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:20,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:25:20,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079136664] [2020-09-24 19:25:20,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:25:20,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:20,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:25:20,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:25:20,433 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 19:25:22,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:22,623 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-24 19:25:22,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:25:22,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-24 19:25:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:22,652 INFO L225 Difference]: With dead ends: 1268 [2020-09-24 19:25:22,652 INFO L226 Difference]: Without dead ends: 694 [2020-09-24 19:25:22,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-24 19:25:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-24 19:25:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 19:25:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 19:25:22,781 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 155 [2020-09-24 19:25:22,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:22,783 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 19:25:22,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:25:22,783 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 19:25:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 19:25:22,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:22,793 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:22,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:25:22,794 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:22,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1778459773, now seen corresponding path program 1 times [2020-09-24 19:25:22,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:22,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054574843] [2020-09-24 19:25:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 19:25:23,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:23,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:25:23,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:25:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:25:23,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:23,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:23,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:23,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:23,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:23,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:25:23,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:25:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:24,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:24,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:24,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:24,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:24,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:25:24,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:24,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:24,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054574843] [2020-09-24 19:25:24,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:24,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:25:24,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026140373] [2020-09-24 19:25:24,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:24,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:24,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:24,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:24,159 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-24 19:25:26,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:26,790 INFO L93 Difference]: Finished difference Result 1589 states and 1986 transitions. [2020-09-24 19:25:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:26,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-24 19:25:26,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:26,808 INFO L225 Difference]: With dead ends: 1589 [2020-09-24 19:25:26,808 INFO L226 Difference]: Without dead ends: 1010 [2020-09-24 19:25:26,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:26,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-09-24 19:25:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 895. [2020-09-24 19:25:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-09-24 19:25:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1127 transitions. [2020-09-24 19:25:26,885 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1127 transitions. Word has length 176 [2020-09-24 19:25:26,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:26,887 INFO L479 AbstractCegarLoop]: Abstraction has 895 states and 1127 transitions. [2020-09-24 19:25:26,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:26,888 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1127 transitions. [2020-09-24 19:25:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 19:25:26,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:26,896 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:26,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:25:26,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:26,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1702754775, now seen corresponding path program 1 times [2020-09-24 19:25:26,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:26,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667476730] [2020-09-24 19:25:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:26,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:27,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:27,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:27,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:27,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 19:25:27,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:25:27,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:25:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:25:27,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:28,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:28,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:28,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:28,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:25:28,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:25:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:28,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:28,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:28,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:28,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:25:28,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:28,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:25:28,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:25:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:28,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667476730] [2020-09-24 19:25:28,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:28,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:25:28,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626518772] [2020-09-24 19:25:28,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:28,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:28,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:28,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:28,187 INFO L87 Difference]: Start difference. First operand 895 states and 1127 transitions. Second operand 7 states. [2020-09-24 19:25:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:30,388 INFO L93 Difference]: Finished difference Result 2557 states and 3381 transitions. [2020-09-24 19:25:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:30,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-09-24 19:25:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:30,404 INFO L225 Difference]: With dead ends: 2557 [2020-09-24 19:25:30,404 INFO L226 Difference]: Without dead ends: 1686 [2020-09-24 19:25:30,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-09-24 19:25:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1563. [2020-09-24 19:25:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-09-24 19:25:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1981 transitions. [2020-09-24 19:25:30,570 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1981 transitions. Word has length 177 [2020-09-24 19:25:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:30,571 INFO L479 AbstractCegarLoop]: Abstraction has 1563 states and 1981 transitions. [2020-09-24 19:25:30,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1981 transitions. [2020-09-24 19:25:30,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 19:25:30,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:30,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:30,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:25:30,584 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:30,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:30,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1762909559, now seen corresponding path program 1 times [2020-09-24 19:25:30,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:30,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098250082] [2020-09-24 19:25:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:30,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:31,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-24 19:25:31,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 19:25:31,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:25:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:25:31,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:31,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:31,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:31,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:31,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:25:31,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:31,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:31,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:31,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:31,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:25:31,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:25:31,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:31,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:31,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:31,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:31,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 19:25:31,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:25:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:32,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098250082] [2020-09-24 19:25:32,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:32,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:32,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797537569] [2020-09-24 19:25:32,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:32,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:32,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:32,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:32,059 INFO L87 Difference]: Start difference. First operand 1563 states and 1981 transitions. Second operand 7 states. [2020-09-24 19:25:35,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:35,586 INFO L93 Difference]: Finished difference Result 3633 states and 4743 transitions. [2020-09-24 19:25:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:25:35,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-24 19:25:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:35,603 INFO L225 Difference]: With dead ends: 3633 [2020-09-24 19:25:35,603 INFO L226 Difference]: Without dead ends: 2094 [2020-09-24 19:25:35,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2020-09-24 19:25:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 1863. [2020-09-24 19:25:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1863 states. [2020-09-24 19:25:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2277 transitions. [2020-09-24 19:25:35,696 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2277 transitions. Word has length 205 [2020-09-24 19:25:35,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:35,700 INFO L479 AbstractCegarLoop]: Abstraction has 1863 states and 2277 transitions. [2020-09-24 19:25:35,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:35,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2277 transitions. [2020-09-24 19:25:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-24 19:25:35,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:35,712 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:35,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:25:35,713 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:35,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:35,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1146667258, now seen corresponding path program 1 times [2020-09-24 19:25:35,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:35,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830307602] [2020-09-24 19:25:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:36,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-24 19:25:36,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:36,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-09-24 19:25:36,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:25:36,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:36,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:36,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:36,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:36,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:25:36,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:36,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:36,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:36,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:36,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:36,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:37,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:25:37,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:37,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:37,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:37,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:37,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:37,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:37,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:37,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 19:25:37,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:37,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:37,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830307602] [2020-09-24 19:25:37,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:37,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:37,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68140669] [2020-09-24 19:25:37,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:37,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:37,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:37,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:37,255 INFO L87 Difference]: Start difference. First operand 1863 states and 2277 transitions. Second operand 7 states. [2020-09-24 19:25:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:39,319 INFO L93 Difference]: Finished difference Result 3345 states and 4107 transitions. [2020-09-24 19:25:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:39,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-09-24 19:25:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:39,332 INFO L225 Difference]: With dead ends: 3345 [2020-09-24 19:25:39,333 INFO L226 Difference]: Without dead ends: 2124 [2020-09-24 19:25:39,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2020-09-24 19:25:39,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2051. [2020-09-24 19:25:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2020-09-24 19:25:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 2481 transitions. [2020-09-24 19:25:39,406 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 2481 transitions. Word has length 209 [2020-09-24 19:25:39,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:39,406 INFO L479 AbstractCegarLoop]: Abstraction has 2051 states and 2481 transitions. [2020-09-24 19:25:39,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 2481 transitions. [2020-09-24 19:25:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-24 19:25:39,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:39,417 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:39,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:25:39,417 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:39,418 INFO L82 PathProgramCache]: Analyzing trace with hash 59160443, now seen corresponding path program 1 times [2020-09-24 19:25:39,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:39,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998196946] [2020-09-24 19:25:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:39,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:40,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-24 19:25:40,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 19:25:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:25:40,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 19:25:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:25:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:40,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:40,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:40,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:40,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:40,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:40,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:40,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:40,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:40,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:40,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:40,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:40,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:40,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:25:40,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:40,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:40,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:25:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:40,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:40,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:40,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:40,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:40,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 19:25:40,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:40,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998196946] [2020-09-24 19:25:40,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:40,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:40,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290439177] [2020-09-24 19:25:40,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:40,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:40,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:40,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:40,818 INFO L87 Difference]: Start difference. First operand 2051 states and 2481 transitions. Second operand 7 states. [2020-09-24 19:25:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:43,166 INFO L93 Difference]: Finished difference Result 4994 states and 6131 transitions. [2020-09-24 19:25:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:43,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-24 19:25:43,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:43,184 INFO L225 Difference]: With dead ends: 4994 [2020-09-24 19:25:43,184 INFO L226 Difference]: Without dead ends: 2765 [2020-09-24 19:25:43,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:43,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2020-09-24 19:25:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2711. [2020-09-24 19:25:43,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2020-09-24 19:25:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3265 transitions. [2020-09-24 19:25:43,273 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3265 transitions. Word has length 216 [2020-09-24 19:25:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:43,273 INFO L479 AbstractCegarLoop]: Abstraction has 2711 states and 3265 transitions. [2020-09-24 19:25:43,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3265 transitions. [2020-09-24 19:25:43,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-24 19:25:43,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:43,287 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:43,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:25:43,288 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:43,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:43,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1003904902, now seen corresponding path program 1 times [2020-09-24 19:25:43,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:43,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26750913] [2020-09-24 19:25:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:43,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:44,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:44,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:44,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:44,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-24 19:25:44,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:25:44,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:25:44,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:44,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:44,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:44,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:44,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:44,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:44,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:44,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:44,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:25:44,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:44,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:44,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:44,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:44,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:44,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:44,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:25:44,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:44,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:44,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:44,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:44,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:44,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:44,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 19:25:44,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:44,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:44,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:44,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:44,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:44,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:25:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:44,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:44,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:25:44,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:25:44,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:25:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:44,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:25:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:44,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:44,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:44,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:44,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:44,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 19:25:44,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:25:44,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:44,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 26 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-09-24 19:25:44,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26750913] [2020-09-24 19:25:44,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:44,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:44,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16065290] [2020-09-24 19:25:44,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:44,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:44,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:44,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:44,919 INFO L87 Difference]: Start difference. First operand 2711 states and 3265 transitions. Second operand 7 states. [2020-09-24 19:25:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:47,444 INFO L93 Difference]: Finished difference Result 5330 states and 6377 transitions. [2020-09-24 19:25:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:47,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-09-24 19:25:47,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:47,460 INFO L225 Difference]: With dead ends: 5330 [2020-09-24 19:25:47,460 INFO L226 Difference]: Without dead ends: 3281 [2020-09-24 19:25:47,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-09-24 19:25:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3099. [2020-09-24 19:25:47,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3099 states. [2020-09-24 19:25:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 3632 transitions. [2020-09-24 19:25:47,577 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 3632 transitions. Word has length 275 [2020-09-24 19:25:47,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:47,577 INFO L479 AbstractCegarLoop]: Abstraction has 3099 states and 3632 transitions. [2020-09-24 19:25:47,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:47,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 3632 transitions. [2020-09-24 19:25:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-09-24 19:25:47,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:47,595 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:47,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:25:47,595 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:47,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:47,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1093543486, now seen corresponding path program 1 times [2020-09-24 19:25:47,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:47,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730966367] [2020-09-24 19:25:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-09-24 19:25:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:25:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:25:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:48,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:48,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:48,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:48,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:48,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:48,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 19:25:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:48,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:25:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:48,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 19:25:48,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:48,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:49,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:25:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:49,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:49,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:25:49,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:25:49,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:25:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:49,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 19:25:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:49,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:49,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:49,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:49,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:25:49,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:25:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 128 proven. 26 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 19:25:49,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730966367] [2020-09-24 19:25:49,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:49,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:49,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93055951] [2020-09-24 19:25:49,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:49,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:49,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:49,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:49,178 INFO L87 Difference]: Start difference. First operand 3099 states and 3632 transitions. Second operand 8 states. [2020-09-24 19:25:49,943 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-24 19:25:53,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:53,234 INFO L93 Difference]: Finished difference Result 8897 states and 11220 transitions. [2020-09-24 19:25:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:25:53,235 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2020-09-24 19:25:53,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:53,269 INFO L225 Difference]: With dead ends: 8897 [2020-09-24 19:25:53,270 INFO L226 Difference]: Without dead ends: 5832 [2020-09-24 19:25:53,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5832 states. [2020-09-24 19:25:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5832 to 4148. [2020-09-24 19:25:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4148 states. [2020-09-24 19:25:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 4862 transitions. [2020-09-24 19:25:53,421 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 4862 transitions. Word has length 283 [2020-09-24 19:25:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:53,422 INFO L479 AbstractCegarLoop]: Abstraction has 4148 states and 4862 transitions. [2020-09-24 19:25:53,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 4862 transitions. [2020-09-24 19:25:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-09-24 19:25:53,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:53,443 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:53,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:25:53,443 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:53,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1274806967, now seen corresponding path program 1 times [2020-09-24 19:25:53,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:53,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959060981] [2020-09-24 19:25:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:53,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:54,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-09-24 19:25:54,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-24 19:25:54,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 19:25:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:54,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:54,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:54,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:54,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:54,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:54,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:54,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:54,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:54,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:25:54,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:25:54,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:25:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:54,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:25:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:54,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:54,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:54,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 19:25:54,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:54,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 19:25:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:54,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:25:54,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:25:54,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:25:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:54,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:54,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:25:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:54,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:54,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:54,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:25:54,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:25:54,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:25:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:54,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 142 proven. 26 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-24 19:25:55,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959060981] [2020-09-24 19:25:55,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:55,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:25:55,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750483944] [2020-09-24 19:25:55,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:25:55,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:55,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:25:55,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:25:55,054 INFO L87 Difference]: Start difference. First operand 4148 states and 4862 transitions. Second operand 9 states. [2020-09-24 19:25:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:58,729 INFO L93 Difference]: Finished difference Result 9245 states and 10962 transitions. [2020-09-24 19:25:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:25:58,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 297 [2020-09-24 19:25:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:58,752 INFO L225 Difference]: With dead ends: 9245 [2020-09-24 19:25:58,752 INFO L226 Difference]: Without dead ends: 5131 [2020-09-24 19:25:58,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2020-09-24 19:25:58,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2020-09-24 19:25:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 4859. [2020-09-24 19:25:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4859 states. [2020-09-24 19:25:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4859 states to 4859 states and 5593 transitions. [2020-09-24 19:25:58,877 INFO L78 Accepts]: Start accepts. Automaton has 4859 states and 5593 transitions. Word has length 297 [2020-09-24 19:25:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:58,877 INFO L479 AbstractCegarLoop]: Abstraction has 4859 states and 5593 transitions. [2020-09-24 19:25:58,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:25:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4859 states and 5593 transitions. [2020-09-24 19:25:58,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-09-24 19:25:58,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:58,901 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:58,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:25:58,902 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:58,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:58,902 INFO L82 PathProgramCache]: Analyzing trace with hash 355484569, now seen corresponding path program 1 times [2020-09-24 19:25:58,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:58,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064317384] [2020-09-24 19:25:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:59,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-09-24 19:25:59,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:25:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:25:59,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 19:25:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:25:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:00,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:00,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:00,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:00,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:00,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:00,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:00,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:00,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:00,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:00,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 19:26:00,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:00,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:00,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:00,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:26:00,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:26:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:00,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:00,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:26:00,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:00,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 19:26:00,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:26:00,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:00,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 19:26:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:00,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:00,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:26:00,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:26:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:00,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-24 19:26:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:00,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:00,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:00,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:00,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:00,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 19:26:00,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:00,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:00,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:00,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:00,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:00,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-24 19:26:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:00,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:00,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:00,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:00,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:26:00,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:26:00,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 165 proven. 52 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-09-24 19:26:00,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064317384] [2020-09-24 19:26:00,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:00,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:00,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592880294] [2020-09-24 19:26:00,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:00,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:00,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:00,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:00,444 INFO L87 Difference]: Start difference. First operand 4859 states and 5593 transitions. Second operand 7 states. [2020-09-24 19:26:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:03,032 INFO L93 Difference]: Finished difference Result 9176 states and 10576 transitions. [2020-09-24 19:26:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:26:03,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-09-24 19:26:03,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:03,047 INFO L225 Difference]: With dead ends: 9176 [2020-09-24 19:26:03,047 INFO L226 Difference]: Without dead ends: 4957 [2020-09-24 19:26:03,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2020-09-24 19:26:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 4289. [2020-09-24 19:26:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4289 states. [2020-09-24 19:26:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4289 states to 4289 states and 4815 transitions. [2020-09-24 19:26:03,151 INFO L78 Accepts]: Start accepts. Automaton has 4289 states and 4815 transitions. Word has length 315 [2020-09-24 19:26:03,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:03,151 INFO L479 AbstractCegarLoop]: Abstraction has 4289 states and 4815 transitions. [2020-09-24 19:26:03,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4289 states and 4815 transitions. [2020-09-24 19:26:03,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-09-24 19:26:03,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:03,171 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:03,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:26:03,172 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:03,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:03,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1261591373, now seen corresponding path program 1 times [2020-09-24 19:26:03,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:03,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675314733] [2020-09-24 19:26:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:03,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:03,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:04,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:04,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-09-24 19:26:04,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:26:04,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-24 19:26:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:26:04,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:04,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:04,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:04,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:04,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:04,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:04,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:04,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:04,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:04,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:04,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 19:26:04,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:04,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:04,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:04,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 19:26:04,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:04,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-24 19:26:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:04,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:04,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:04,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 19:26:04,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:04,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 19:26:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:04,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:04,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:04,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:26:04,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:04,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:04,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-24 19:26:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:04,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:04,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:04,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:04,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:26:04,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:26:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:04,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 164 proven. 26 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-24 19:26:04,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675314733] [2020-09-24 19:26:04,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:04,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:04,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024229220] [2020-09-24 19:26:04,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:04,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:04,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:04,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:04,832 INFO L87 Difference]: Start difference. First operand 4289 states and 4815 transitions. Second operand 8 states. [2020-09-24 19:26:05,119 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66