/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:18,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:18,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:18,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:18,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:18,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:18,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:18,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:18,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:18,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:18,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:18,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:18,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:18,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:18,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:18,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:18,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:18,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:18,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:18,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:18,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:18,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:18,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:18,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:18,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:18,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:18,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:18,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:18,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:18,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:18,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:18,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:18,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:18,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:18,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:18,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:18,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:18,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:18,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:18,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:18,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:18,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:05:18,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:18,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:18,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:18,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:18,528 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:18,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:18,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:18,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:18,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:18,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:18,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:18,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:18,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:18,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:18,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:18,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:18,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:18,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:18,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:18,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:18,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:18,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:18,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:18,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:18,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:18,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:18,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:18,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:18,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:18,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:05:18,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:19,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:19,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:19,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:19,012 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:19,013 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 09:05:19,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f87a4f4fd/75cb063f8d5748319f35abcc9f4b7e3f/FLAG53ab4ca7f [2020-09-25 09:05:19,661 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:19,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 09:05:19,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f87a4f4fd/75cb063f8d5748319f35abcc9f4b7e3f/FLAG53ab4ca7f [2020-09-25 09:05:19,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f87a4f4fd/75cb063f8d5748319f35abcc9f4b7e3f [2020-09-25 09:05:19,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:19,923 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:19,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:19,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:19,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:19,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:19" (1/1) ... [2020-09-25 09:05:19,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9ac829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:19, skipping insertion in model container [2020-09-25 09:05:19,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:19" (1/1) ... [2020-09-25 09:05:19,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:20,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:20,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:20,433 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:20,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:20,696 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:20,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20 WrapperNode [2020-09-25 09:05:20,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:20,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:20,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:20,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:20,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20" (1/1) ... [2020-09-25 09:05:20,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20" (1/1) ... [2020-09-25 09:05:20,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20" (1/1) ... [2020-09-25 09:05:20,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20" (1/1) ... [2020-09-25 09:05:20,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20" (1/1) ... [2020-09-25 09:05:20,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20" (1/1) ... [2020-09-25 09:05:20,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20" (1/1) ... [2020-09-25 09:05:20,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:20,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:20,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:20,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:20,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:22,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:22,340 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:22,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:22 BoogieIcfgContainer [2020-09-25 09:05:22,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:22,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:22,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:22,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:22,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:19" (1/3) ... [2020-09-25 09:05:22,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5849b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:22, skipping insertion in model container [2020-09-25 09:05:22,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20" (2/3) ... [2020-09-25 09:05:22,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5849b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:22, skipping insertion in model container [2020-09-25 09:05:22,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:22" (3/3) ... [2020-09-25 09:05:22,359 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 09:05:22,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:22,385 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:22,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:22,446 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:22,446 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:22,447 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:22,447 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:22,447 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:22,447 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:22,447 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:22,447 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:22,477 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 09:05:22,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:22,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:22,489 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:22,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:22,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 09:05:22,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:22,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610264558] [2020-09-25 09:05:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:23,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:23,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 09:05:23,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-25 09:05:23,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:23,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:05:23,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:05:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:23,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:23,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:23,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:23,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:23,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:05:23,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:23,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:23,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:23,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610264558] [2020-09-25 09:05:23,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:23,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:05:23,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357698181] [2020-09-25 09:05:23,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:05:23,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:23,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:05:23,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:05:23,447 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:05:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:25,399 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 09:05:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:05:25,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 09:05:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:25,433 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 09:05:25,433 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 09:05:25,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:25,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 09:05:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 09:05:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 09:05:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 09:05:25,557 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 09:05:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:25,558 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 09:05:25,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:05:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 09:05:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 09:05:25,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:25,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:25,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:25,567 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:25,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:25,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 09:05:25,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:25,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251855508] [2020-09-25 09:05:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:27,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 09:05:27,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:05:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1423 [2020-09-25 09:05:27,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:27,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:27,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:05:27,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:27,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:27,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:27,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:27,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:05:27,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:27,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:27,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:05:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:27,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:27,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:27,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 09:05:27,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 09:05:27,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:27,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:27,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:05:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:27,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251855508] [2020-09-25 09:05:27,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:27,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:05:27,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624122992] [2020-09-25 09:05:27,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:27,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:27,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:27,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:27,545 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 09:05:29,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:29,652 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-25 09:05:29,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 09:05:29,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-09-25 09:05:29,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:29,658 INFO L225 Difference]: With dead ends: 1258 [2020-09-25 09:05:29,658 INFO L226 Difference]: Without dead ends: 730 [2020-09-25 09:05:29,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-25 09:05:29,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-25 09:05:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 09:05:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-25 09:05:29,698 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 127 [2020-09-25 09:05:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:29,699 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-25 09:05:29,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-25 09:05:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 09:05:29,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:29,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:29,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:29,703 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:29,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:29,703 INFO L82 PathProgramCache]: Analyzing trace with hash 843318586, now seen corresponding path program 1 times [2020-09-25 09:05:29,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:29,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031865677] [2020-09-25 09:05:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:29,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:34,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 09:05:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4581 [2020-09-25 09:05:34,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:34,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:05:34,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:34,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:34,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:34,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:34,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:34,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:34,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:05:34,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:34,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:34,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:34,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:34,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:34,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:34,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:34,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:34,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 09:05:34,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:34,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:34,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031865677] [2020-09-25 09:05:34,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:34,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:34,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841087390] [2020-09-25 09:05:34,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:34,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:34,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:34,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:34,729 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 6 states. [2020-09-25 09:05:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:37,762 INFO L93 Difference]: Finished difference Result 1925 states and 2517 transitions. [2020-09-25 09:05:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:37,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-25 09:05:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:37,777 INFO L225 Difference]: With dead ends: 1925 [2020-09-25 09:05:37,777 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 09:05:37,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 09:05:37,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1335. [2020-09-25 09:05:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-09-25 09:05:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1725 transitions. [2020-09-25 09:05:37,843 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1725 transitions. Word has length 136 [2020-09-25 09:05:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:37,850 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1725 transitions. [2020-09-25 09:05:37,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1725 transitions. [2020-09-25 09:05:37,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 09:05:37,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:37,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:37,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:37,861 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:37,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1301933938, now seen corresponding path program 1 times [2020-09-25 09:05:37,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:37,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089649786] [2020-09-25 09:05:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:37,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:39,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:39,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 09:05:39,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:05:39,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2043 [2020-09-25 09:05:39,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:39,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:05:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:05:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:40,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:40,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:40,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:05:40,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:40,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:05:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:40,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:40,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:05:40,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 09:05:40,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:40,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:05:40,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:40,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089649786] [2020-09-25 09:05:40,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:40,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:05:40,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868685869] [2020-09-25 09:05:40,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:05:40,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:40,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:05:40,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:40,281 INFO L87 Difference]: Start difference. First operand 1335 states and 1725 transitions. Second operand 8 states. [2020-09-25 09:05:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:42,977 INFO L93 Difference]: Finished difference Result 4265 states and 5989 transitions. [2020-09-25 09:05:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:05:42,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-09-25 09:05:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:42,997 INFO L225 Difference]: With dead ends: 4265 [2020-09-25 09:05:42,997 INFO L226 Difference]: Without dead ends: 3095 [2020-09-25 09:05:43,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:05:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2020-09-25 09:05:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 2757. [2020-09-25 09:05:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2757 states. [2020-09-25 09:05:43,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3617 transitions. [2020-09-25 09:05:43,121 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3617 transitions. Word has length 138 [2020-09-25 09:05:43,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:43,122 INFO L479 AbstractCegarLoop]: Abstraction has 2757 states and 3617 transitions. [2020-09-25 09:05:43,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:05:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3617 transitions. [2020-09-25 09:05:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 09:05:43,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:43,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:43,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:43,128 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:43,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1068014475, now seen corresponding path program 1 times [2020-09-25 09:05:43,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:43,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933339031] [2020-09-25 09:05:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:43,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:48,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 09:05:48,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:48,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 09:05:48,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:48,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-09-25 09:05:48,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:48,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:48,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:48,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:48,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:05:48,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:48,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:48,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:48,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:48,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 09:05:48,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:48,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:48,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 09:05:48,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:05:48,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:05:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:48,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:48,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 09:05:48,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:48,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 09:05:48,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:48,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:05:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 09:05:49,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933339031] [2020-09-25 09:05:49,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:49,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:49,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820493123] [2020-09-25 09:05:49,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:49,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:49,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:49,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:49,058 INFO L87 Difference]: Start difference. First operand 2757 states and 3617 transitions. Second operand 10 states. [2020-09-25 09:05:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:52,078 INFO L93 Difference]: Finished difference Result 6174 states and 8387 transitions. [2020-09-25 09:05:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:05:52,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 218 [2020-09-25 09:05:52,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:52,100 INFO L225 Difference]: With dead ends: 6174 [2020-09-25 09:05:52,100 INFO L226 Difference]: Without dead ends: 3556 [2020-09-25 09:05:52,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:05:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2020-09-25 09:05:52,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3519. [2020-09-25 09:05:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3519 states. [2020-09-25 09:05:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 4569 transitions. [2020-09-25 09:05:52,208 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 4569 transitions. Word has length 218 [2020-09-25 09:05:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:52,208 INFO L479 AbstractCegarLoop]: Abstraction has 3519 states and 4569 transitions. [2020-09-25 09:05:52,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:52,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 4569 transitions. [2020-09-25 09:05:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 09:05:52,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:52,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:52,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:52,213 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:52,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:52,214 INFO L82 PathProgramCache]: Analyzing trace with hash -862349572, now seen corresponding path program 1 times [2020-09-25 09:05:52,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:52,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447441408] [2020-09-25 09:05:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 09:05:57,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:05:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:05:57,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:57,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:05:57,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:57,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:57,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:57,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:05:57,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:57,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:57,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:57,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:57,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:57,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 09:05:57,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:05:57,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:57,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:05:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:57,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:57,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:57,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 09:05:57,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:05:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:05:58,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447441408] [2020-09-25 09:05:58,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:58,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:58,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440667208] [2020-09-25 09:05:58,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:58,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:58,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:58,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:58,103 INFO L87 Difference]: Start difference. First operand 3519 states and 4569 transitions. Second operand 10 states. [2020-09-25 09:06:02,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:02,365 INFO L93 Difference]: Finished difference Result 7400 states and 9617 transitions. [2020-09-25 09:06:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 09:06:02,369 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 219 [2020-09-25 09:06:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:02,387 INFO L225 Difference]: With dead ends: 7400 [2020-09-25 09:06:02,387 INFO L226 Difference]: Without dead ends: 4046 [2020-09-25 09:06:02,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-09-25 09:06:02,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2020-09-25 09:06:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 3529. [2020-09-25 09:06:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3529 states. [2020-09-25 09:06:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4571 transitions. [2020-09-25 09:06:02,498 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4571 transitions. Word has length 219 [2020-09-25 09:06:02,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:02,499 INFO L479 AbstractCegarLoop]: Abstraction has 3529 states and 4571 transitions. [2020-09-25 09:06:02,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:02,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4571 transitions. [2020-09-25 09:06:02,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 09:06:02,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:02,504 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:02,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:02,505 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:02,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:02,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1921860465, now seen corresponding path program 1 times [2020-09-25 09:06:02,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:02,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59923110] [2020-09-25 09:06:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:02,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking...