/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:27,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:27,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:27,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:27,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:27,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:27,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:27,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:27,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:27,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:27,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:27,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:27,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:27,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:27,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:27,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:27,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:27,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:27,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:27,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:27,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:27,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:27,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:27,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:27,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:27,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:27,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:27,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:27,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:27,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:27,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:27,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:27,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:27,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:27,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:27,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:27,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:27,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:27,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:27,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:27,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:27,385 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 10:11:27,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:27,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:27,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:27,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:27,432 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:27,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:27,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:27,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:27,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:27,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:27,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:27,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:27,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:27,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:27,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:27,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:27,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:27,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:27,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:27,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:27,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:27,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:27,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:27,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:27,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:27,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:27,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:27,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:27,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:27,439 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:11:27,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:27,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:27,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:27,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:27,978 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:27,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 10:11:28,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3c453b86/d585847463e14d5c9f02ee483e6598cb/FLAG5203e2146 [2020-09-25 10:11:28,759 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:28,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 10:11:28,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3c453b86/d585847463e14d5c9f02ee483e6598cb/FLAG5203e2146 [2020-09-25 10:11:28,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3c453b86/d585847463e14d5c9f02ee483e6598cb [2020-09-25 10:11:28,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:28,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:28,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:28,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:28,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:28,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:28" (1/1) ... [2020-09-25 10:11:28,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ad355a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:28, skipping insertion in model container [2020-09-25 10:11:28,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:28" (1/1) ... [2020-09-25 10:11:28,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:29,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:29,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:29,615 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:29,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:29,796 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:29,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:29 WrapperNode [2020-09-25 10:11:29,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:29,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:29,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:29,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:29,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:29" (1/1) ... [2020-09-25 10:11:29,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:29" (1/1) ... [2020-09-25 10:11:29,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:29" (1/1) ... [2020-09-25 10:11:29,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:29" (1/1) ... [2020-09-25 10:11:29,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:29" (1/1) ... [2020-09-25 10:11:29,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:29" (1/1) ... [2020-09-25 10:11:29,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:29" (1/1) ... [2020-09-25 10:11:29,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:29,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:29,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:29,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:29,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:29" (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 10:11:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:30,033 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:30,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:30,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:31,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:31,452 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:31,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:31 BoogieIcfgContainer [2020-09-25 10:11:31,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:31,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:31,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:31,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:31,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:28" (1/3) ... [2020-09-25 10:11:31,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460f63e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:31, skipping insertion in model container [2020-09-25 10:11:31,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:29" (2/3) ... [2020-09-25 10:11:31,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460f63e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:31, skipping insertion in model container [2020-09-25 10:11:31,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:31" (3/3) ... [2020-09-25 10:11:31,470 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-25 10:11:31,482 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:31,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:31,513 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:31,545 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:31,545 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:31,545 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:31,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:31,545 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:31,546 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:31,546 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:31,546 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:31,578 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 10:11:31,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:31,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:31,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:31,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-25 10:11:31,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:31,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982968193] [2020-09-25 10:11:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:31,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:33,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 10:11:33,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:11:33,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-09-25 10:11:33,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:33,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:33,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:33,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:11:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:11:33,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:33,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:33,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:33,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:33,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:11:33,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:33,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:33,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:33,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:33,422 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 10:11:33,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982968193] [2020-09-25 10:11:33,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:33,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:11:33,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411135185] [2020-09-25 10:11:33,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:11:33,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:33,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:11:33,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:11:33,455 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:11:35,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:35,439 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 10:11:35,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:35,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-25 10:11:35,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:35,473 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 10:11:35,473 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 10:11:35,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 10:11:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 10:11:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 10:11:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 10:11:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 10:11:35,585 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 80 [2020-09-25 10:11:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:35,586 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 10:11:35,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 10:11:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 10:11:35,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:35,595 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, 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 10:11:35,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:35,596 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:35,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:35,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-25 10:11:35,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:35,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321211138] [2020-09-25 10:11:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:35,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:39,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 10:11:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3955 [2020-09-25 10:11:39,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:39,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 10:11:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:39,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:39,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:39,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:39,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:39,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:39,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:11:39,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:39,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:39,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:39,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:39,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:39,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:39,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:39,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 10:11:39,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:39,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:11:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:40,260 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:40,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321211138] [2020-09-25 10:11:40,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:40,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:11:40,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899542521] [2020-09-25 10:11:40,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:11:40,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:40,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:11:40,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:40,266 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 10:11:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:42,189 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 10:11:42,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:11:42,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-09-25 10:11:42,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:42,196 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 10:11:42,196 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 10:11:42,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 10:11:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 10:11:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 10:11:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 10:11:42,236 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 159 [2020-09-25 10:11:42,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:42,237 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 10:11:42,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:11:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 10:11:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 10:11:42,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:42,243 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, 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] [2020-09-25 10:11:42,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:42,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:42,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:42,244 INFO L82 PathProgramCache]: Analyzing trace with hash -663007827, now seen corresponding path program 1 times [2020-09-25 10:11:42,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:42,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312065448] [2020-09-25 10:11:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:42,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:47,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 10:11:47,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:11:47,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:47,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 10:11:47,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:47,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:47,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:47,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:47,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:47,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:11:47,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:47,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:47,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:47,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:47,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:47,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:47,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 10:11:47,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:47,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:47,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:47,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:47,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312065448] [2020-09-25 10:11:47,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:47,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:47,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735382786] [2020-09-25 10:11:47,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:47,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:47,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:47,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:47,674 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 10:11:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:51,156 INFO L93 Difference]: Finished difference Result 1986 states and 2591 transitions. [2020-09-25 10:11:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:11:51,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 10:11:51,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:51,170 INFO L225 Difference]: With dead ends: 1986 [2020-09-25 10:11:51,170 INFO L226 Difference]: Without dead ends: 1456 [2020-09-25 10:11:51,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:11:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-09-25 10:11:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1363. [2020-09-25 10:11:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-09-25 10:11:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1741 transitions. [2020-09-25 10:11:51,260 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1741 transitions. Word has length 169 [2020-09-25 10:11:51,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:51,262 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1741 transitions. [2020-09-25 10:11:51,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:51,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1741 transitions. [2020-09-25 10:11:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 10:11:51,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:51,275 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, 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] [2020-09-25 10:11:51,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:51,275 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:51,276 INFO L82 PathProgramCache]: Analyzing trace with hash 715941429, now seen corresponding path program 1 times [2020-09-25 10:11:51,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:51,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901346111] [2020-09-25 10:11:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:52,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:52,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 10:11:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:11:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-09-25 10:11:52,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:52,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:11:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 10:11:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:53,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:53,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:53,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:53,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:11:53,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:53,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:11:53,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:53,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:53,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:53,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:53,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 10:11:53,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:53,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 10:11:53,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:53,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:11:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:53,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901346111] [2020-09-25 10:11:53,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:53,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:11:53,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178254417] [2020-09-25 10:11:53,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:11:53,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:53,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:11:53,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:53,315 INFO L87 Difference]: Start difference. First operand 1363 states and 1741 transitions. Second operand 7 states. [2020-09-25 10:11:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:55,768 INFO L93 Difference]: Finished difference Result 3429 states and 4626 transitions. [2020-09-25 10:11:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:11:55,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 10:11:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:55,783 INFO L225 Difference]: With dead ends: 3429 [2020-09-25 10:11:55,784 INFO L226 Difference]: Without dead ends: 2231 [2020-09-25 10:11:55,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:55,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-09-25 10:11:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2157. [2020-09-25 10:11:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-25 10:11:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 2647 transitions. [2020-09-25 10:11:55,888 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 2647 transitions. Word has length 171 [2020-09-25 10:11:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:55,888 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 2647 transitions. [2020-09-25 10:11:55,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:11:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 2647 transitions. [2020-09-25 10:11:55,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 10:11:55,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:55,895 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:11:55,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:55,896 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:55,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:55,897 INFO L82 PathProgramCache]: Analyzing trace with hash -883468643, now seen corresponding path program 1 times [2020-09-25 10:11:55,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:55,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37671662] [2020-09-25 10:11:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:55,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:56,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:00,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 10:12:00,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:00,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:12:00,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:00,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:12:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-09-25 10:12:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:01,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:01,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:01,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:01,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:01,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:12:01,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:01,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:01,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:01,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:01,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:01,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:01,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 10:12:01,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:01,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:01,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:12:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:01,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:01,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:01,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 10:12:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:01,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:12:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 108 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:12:02,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37671662] [2020-09-25 10:12:02,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:02,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:12:02,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147880554] [2020-09-25 10:12:02,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:12:02,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:02,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:12:02,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:12:02,181 INFO L87 Difference]: Start difference. First operand 2157 states and 2647 transitions. Second operand 17 states. [2020-09-25 10:12:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:12,300 INFO L93 Difference]: Finished difference Result 7690 states and 10145 transitions. [2020-09-25 10:12:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-25 10:12:12,302 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 248 [2020-09-25 10:12:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:12,331 INFO L225 Difference]: With dead ends: 7690 [2020-09-25 10:12:12,331 INFO L226 Difference]: Without dead ends: 5632 [2020-09-25 10:12:12,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=642, Invalid=2220, Unknown=0, NotChecked=0, Total=2862 [2020-09-25 10:12:12,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2020-09-25 10:12:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 4404. [2020-09-25 10:12:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4404 states. [2020-09-25 10:12:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4404 states to 4404 states and 5576 transitions. [2020-09-25 10:12:12,498 INFO L78 Accepts]: Start accepts. Automaton has 4404 states and 5576 transitions. Word has length 248 [2020-09-25 10:12:12,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:12,499 INFO L479 AbstractCegarLoop]: Abstraction has 4404 states and 5576 transitions. [2020-09-25 10:12:12,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:12:12,499 INFO L276 IsEmpty]: Start isEmpty. Operand 4404 states and 5576 transitions. [2020-09-25 10:12:12,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-09-25 10:12:12,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:12,506 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:12:12,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:12,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:12,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:12,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1491417586, now seen corresponding path program 1 times [2020-09-25 10:12:12,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:12,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181827934] [2020-09-25 10:12:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:12,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:14,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:16,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:16,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:16,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-25 10:12:16,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4252 [2020-09-25 10:12:16,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:16,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 10:12:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 10:12:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:16,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:16,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:16,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:16,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:12:16,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:16,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:12:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:12:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:16,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:17,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:17,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 10:12:17,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:17,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 10:12:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:17,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:12:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat