/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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:03,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:03,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:03,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:03,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:03,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:03,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:03,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:03,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:03,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:03,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:03,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:03,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:03,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:03,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:03,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:03,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:03,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:03,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:03,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:03,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:03,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:03,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:03,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:03,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:03,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:03,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:03,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:03,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:03,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:03,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:03,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:03,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:03,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:03,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:03,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:03,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:03,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:03,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:03,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:03,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:03,440 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 09:06:03,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:03,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:03,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:03,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:03,468 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:03,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:03,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:03,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:03,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:03,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:03,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:03,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:03,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:03,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:03,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:03,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:03,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:03,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:03,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:03,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:03,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:03,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:03,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:03,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:03,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:03,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:03,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:03,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:03,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:03,473 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 09:06:03,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:03,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:03,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:03,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:03,963 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:03,964 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 09:06:04,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b9ecc4a/32948e01718b4665ab57a220ce59fff3/FLAG323d67d60 [2020-09-25 09:06:04,666 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:04,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 09:06:04,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b9ecc4a/32948e01718b4665ab57a220ce59fff3/FLAG323d67d60 [2020-09-25 09:06:04,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b9ecc4a/32948e01718b4665ab57a220ce59fff3 [2020-09-25 09:06:04,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:04,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:04,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:04,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:04,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:04,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:04" (1/1) ... [2020-09-25 09:06:04,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:04, skipping insertion in model container [2020-09-25 09:06:04,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:04" (1/1) ... [2020-09-25 09:06:04,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:05,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:05,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:05,507 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:05,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:05,758 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:05,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:05 WrapperNode [2020-09-25 09:06:05,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:05,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:05,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:05,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:05,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:05" (1/1) ... [2020-09-25 09:06:05,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:05" (1/1) ... [2020-09-25 09:06:05,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:05" (1/1) ... [2020-09-25 09:06:05,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:05" (1/1) ... [2020-09-25 09:06:05,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:05" (1/1) ... [2020-09-25 09:06:05,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:05" (1/1) ... [2020-09-25 09:06:05,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:05" (1/1) ... [2020-09-25 09:06:05,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:05,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:05,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:05,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:05,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:05" (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 09:06:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:06,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:06,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:07,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:07,633 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:07,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:07 BoogieIcfgContainer [2020-09-25 09:06:07,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:07,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:07,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:07,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:07,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:04" (1/3) ... [2020-09-25 09:06:07,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6639092e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:07, skipping insertion in model container [2020-09-25 09:06:07,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:05" (2/3) ... [2020-09-25 09:06:07,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6639092e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:07, skipping insertion in model container [2020-09-25 09:06:07,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:07" (3/3) ... [2020-09-25 09:06:07,651 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-09-25 09:06:07,662 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:07,673 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:07,695 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:07,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:07,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:07,729 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:07,729 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:07,729 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:07,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:07,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:07,730 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:06:07,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 09:06:07,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:07,771 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] [2020-09-25 09:06:07,772 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:07,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1046899727, now seen corresponding path program 1 times [2020-09-25 09:06:07,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:07,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390287377] [2020-09-25 09:06:07,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:08,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:08,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 09:06:08,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:08,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-09-25 09:06:08,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:08,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:08,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 09:06:08,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:06:08,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:08,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:08,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:08,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:08,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:06:08,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:08,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:08,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:08,795 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 09:06:08,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390287377] [2020-09-25 09:06:08,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:08,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:06:08,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357767413] [2020-09-25 09:06:08,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:06:08,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:08,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:06:08,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:08,828 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 09:06:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:11,647 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 09:06:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:06:11,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-25 09:06:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:11,678 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:06:11,678 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 09:06:11,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 09:06:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 09:06:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:06:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 09:06:11,814 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 68 [2020-09-25 09:06:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:11,815 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 09:06:11,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:06:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 09:06:11,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 09:06:11,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:11,834 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:11,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:11,834 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:11,836 INFO L82 PathProgramCache]: Analyzing trace with hash -160289432, now seen corresponding path program 1 times [2020-09-25 09:06:11,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:11,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810371322] [2020-09-25 09:06:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:13,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:16,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:16,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 09:06:16,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:06:16,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 09:06:16,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:16,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 09:06:16,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:17,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:17,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:17,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:17,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:06:17,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:17,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:17,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:17,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:17,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:17,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:17,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:17,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:17,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:17,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 09:06:17,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:17,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:17,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:17,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:17,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:17,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:17,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810371322] [2020-09-25 09:06:17,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:17,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:17,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421607078] [2020-09-25 09:06:17,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:17,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:17,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:17,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:17,663 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 10 states. [2020-09-25 09:06:20,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:20,750 INFO L93 Difference]: Finished difference Result 2046 states and 2862 transitions. [2020-09-25 09:06:20,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:20,751 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 151 [2020-09-25 09:06:20,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:20,760 INFO L225 Difference]: With dead ends: 2046 [2020-09-25 09:06:20,760 INFO L226 Difference]: Without dead ends: 1347 [2020-09-25 09:06:20,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:06:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-09-25 09:06:20,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1004. [2020-09-25 09:06:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-09-25 09:06:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1290 transitions. [2020-09-25 09:06:20,828 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1290 transitions. Word has length 151 [2020-09-25 09:06:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:20,831 INFO L479 AbstractCegarLoop]: Abstraction has 1004 states and 1290 transitions. [2020-09-25 09:06:20,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:20,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1290 transitions. [2020-09-25 09:06:20,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 09:06:20,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:20,835 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:20,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:20,836 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:20,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:20,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1824017853, now seen corresponding path program 1 times [2020-09-25 09:06:20,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:20,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292857766] [2020-09-25 09:06:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:22,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:22,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:24,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 09:06:24,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:06:24,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4066 [2020-09-25 09:06:24,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:24,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:24,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:06:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 09:06:24,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:25,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:25,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:25,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:25,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:25,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:25,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:06:25,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:25,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:25,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:25,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:25,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:25,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:25,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:25,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 09:06:25,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:25,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:25,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:25,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:25,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292857766] [2020-09-25 09:06:25,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:25,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:06:25,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714585855] [2020-09-25 09:06:25,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:06:25,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:25,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:06:25,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:25,316 INFO L87 Difference]: Start difference. First operand 1004 states and 1290 transitions. Second operand 6 states. [2020-09-25 09:06:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:28,082 INFO L93 Difference]: Finished difference Result 2833 states and 3873 transitions. [2020-09-25 09:06:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:06:28,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 09:06:28,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:28,094 INFO L225 Difference]: With dead ends: 2833 [2020-09-25 09:06:28,095 INFO L226 Difference]: Without dead ends: 1844 [2020-09-25 09:06:28,099 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 09:06:28,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2020-09-25 09:06:28,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1478. [2020-09-25 09:06:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-09-25 09:06:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1991 transitions. [2020-09-25 09:06:28,163 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1991 transitions. Word has length 157 [2020-09-25 09:06:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:28,164 INFO L479 AbstractCegarLoop]: Abstraction has 1478 states and 1991 transitions. [2020-09-25 09:06:28,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1991 transitions. [2020-09-25 09:06:28,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 09:06:28,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:28,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:28,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:28,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:28,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1830974367, now seen corresponding path program 1 times [2020-09-25 09:06:28,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:28,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932361872] [2020-09-25 09:06:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:31,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:33,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 09:06:33,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:06:33,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 09:06:33,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:33,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 09:06:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:33,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:33,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:33,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:06:33,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:33,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:33,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:33,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:33,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 09:06:33,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-25 09:06:33,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:33,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 09:06:33,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:34,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932361872] [2020-09-25 09:06:34,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:34,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:34,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145028666] [2020-09-25 09:06:34,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:34,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:34,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:34,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:34,197 INFO L87 Difference]: Start difference. First operand 1478 states and 1991 transitions. Second operand 10 states. [2020-09-25 09:06:37,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:37,851 INFO L93 Difference]: Finished difference Result 3909 states and 5457 transitions. [2020-09-25 09:06:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:06:37,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 190 [2020-09-25 09:06:37,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:37,866 INFO L225 Difference]: With dead ends: 3909 [2020-09-25 09:06:37,866 INFO L226 Difference]: Without dead ends: 2417 [2020-09-25 09:06:37,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:06:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2020-09-25 09:06:37,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2087. [2020-09-25 09:06:37,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2020-09-25 09:06:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2764 transitions. [2020-09-25 09:06:37,941 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2764 transitions. Word has length 190 [2020-09-25 09:06:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:37,941 INFO L479 AbstractCegarLoop]: Abstraction has 2087 states and 2764 transitions. [2020-09-25 09:06:37,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2764 transitions. [2020-09-25 09:06:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 09:06:37,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:37,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:37,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:37,947 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:37,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:37,948 INFO L82 PathProgramCache]: Analyzing trace with hash 527558330, now seen corresponding path program 1 times [2020-09-25 09:06:37,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:37,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537382954] [2020-09-25 09:06:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:38,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:42,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 09:06:42,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:42,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:06:42,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:42,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:06:42,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:42,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-25 09:06:42,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:43,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:43,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:43,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:43,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:06:43,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:43,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:43,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:43,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:43,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:43,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 09:06:43,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-25 09:06:43,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:43,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:43,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:06:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:43,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537382954] [2020-09-25 09:06:43,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:43,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:06:43,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564735983] [2020-09-25 09:06:43,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:06:43,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:43,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:06:43,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:06:43,910 INFO L87 Difference]: Start difference. First operand 2087 states and 2764 transitions. Second operand 12 states. [2020-09-25 09:06:46,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:46,998 INFO L93 Difference]: Finished difference Result 4701 states and 6314 transitions. [2020-09-25 09:06:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:46,998 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 214 [2020-09-25 09:06:46,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:47,012 INFO L225 Difference]: With dead ends: 4701 [2020-09-25 09:06:47,012 INFO L226 Difference]: Without dead ends: 2561 [2020-09-25 09:06:47,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:06:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2020-09-25 09:06:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2385. [2020-09-25 09:06:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2385 states. [2020-09-25 09:06:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 3014 transitions. [2020-09-25 09:06:47,112 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 3014 transitions. Word has length 214 [2020-09-25 09:06:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:47,113 INFO L479 AbstractCegarLoop]: Abstraction has 2385 states and 3014 transitions. [2020-09-25 09:06:47,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:06:47,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 3014 transitions. [2020-09-25 09:06:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-09-25 09:06:47,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:47,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:47,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:47,123 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash 588083842, now seen corresponding path program 1 times [2020-09-25 09:06:47,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:47,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560346499] [2020-09-25 09:06:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:47,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking...