/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=DEEPEST --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/Problem02_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:01:43,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:01:43,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:01:43,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:01:43,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:01:43,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:01:43,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:01:43,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:01:43,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:01:43,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:01:43,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:01:43,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:01:43,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:01:43,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:01:43,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:01:43,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:01:43,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:01:43,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:01:43,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:01:43,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:01:43,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:01:43,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:01:43,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:01:43,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:01:43,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-25 01:01:43,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:01:43,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:01:43,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:01:43,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:01:43,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:01:43,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:01:43,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:01:43,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:01:43,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:01:43,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:01:43,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:01:43,307 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 01:01:43,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:01:43,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:01:43,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:01:43,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:01:43,356 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:01:43,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:01:43,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:01:43,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:01:43,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:01:43,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:01:43,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:01:43,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:01:43,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:01:43,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:01:43,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:01:43,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:01:43,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:01:43,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:01:43,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:01:43,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:01:43,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:01:43,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:01:43,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:01:43,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:01:43,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:01:43,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:01:43,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:01:43,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:01:43,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:01:43,363 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:01:43,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:01:43,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:01:43,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:01:43,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:01:43,837 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:01:43,839 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-25 01:01:43,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef5e3a681/fac5c9f1367a41bba15c37353bb8289b/FLAGb50d9e172 [2020-09-25 01:01:44,640 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:01:44,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-25 01:01:44,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef5e3a681/fac5c9f1367a41bba15c37353bb8289b/FLAGb50d9e172 [2020-09-25 01:01:44,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef5e3a681/fac5c9f1367a41bba15c37353bb8289b [2020-09-25 01:01:44,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:01:44,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:01:44,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:01:44,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:01:44,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:01:44,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:01:44" (1/1) ... [2020-09-25 01:01:44,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:44, skipping insertion in model container [2020-09-25 01:01:44,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:01:44" (1/1) ... [2020-09-25 01:01:44,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:01:44,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:01:45,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:01:45,448 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:01:45,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:01:45,652 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:01:45,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:45 WrapperNode [2020-09-25 01:01:45,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:01:45,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:01:45,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:01:45,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:01:45,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:45" (1/1) ... [2020-09-25 01:01:45,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:45" (1/1) ... [2020-09-25 01:01:45,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:45" (1/1) ... [2020-09-25 01:01:45,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:45" (1/1) ... [2020-09-25 01:01:45,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:45" (1/1) ... [2020-09-25 01:01:45,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:45" (1/1) ... [2020-09-25 01:01:45,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:45" (1/1) ... [2020-09-25 01:01:45,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:01:45,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:01:45,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:01:45,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:01:45,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:45" (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 01:01:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:01:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:01:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 01:01:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:01:45,876 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 01:01:45,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:01:45,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:01:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 01:01:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:01:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:01:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:01:47,316 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:01:47,316 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 01:01:47,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:01:47 BoogieIcfgContainer [2020-09-25 01:01:47,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:01:47,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:01:47,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:01:47,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:01:47,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:01:44" (1/3) ... [2020-09-25 01:01:47,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:01:47, skipping insertion in model container [2020-09-25 01:01:47,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:01:45" (2/3) ... [2020-09-25 01:01:47,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:01:47, skipping insertion in model container [2020-09-25 01:01:47,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:01:47" (3/3) ... [2020-09-25 01:01:47,337 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2020-09-25 01:01:47,349 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:01:47,361 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:01:47,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:01:47,420 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:01:47,420 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:01:47,420 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:01:47,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:01:47,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:01:47,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:01:47,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:01:47,421 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:01:47,455 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 01:01:47,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 01:01:47,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:01:47,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:01:47,479 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:01:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:01:47,487 INFO L82 PathProgramCache]: Analyzing trace with hash 604783425, now seen corresponding path program 1 times [2020-09-25 01:01:47,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:01:47,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 01:01:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:01:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:47,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:50,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:52,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:52,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:52,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:52,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 01:01:52,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 01:01:52,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 01:01:52,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:01:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 01:01:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 01:01:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:01:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:01:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:53,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:01:53,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:01:53,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:01:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 01:01:53,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:01:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:01:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:01:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 01:01:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:01:53,158 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 01:01:53,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 01:01:53,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:01:53,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:01:53,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21748542] [2020-09-25 01:01:53,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:01:53,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:01:53,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:01:53,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:01:53,193 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 01:01:55,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:01:55,414 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 01:01:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:01:55,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-09-25 01:01:55,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:01:55,453 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 01:01:55,454 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 01:01:55,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:01:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 01:01:55,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 01:01:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 01:01:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 01:01:55,575 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 134 [2020-09-25 01:01:55,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:01:55,576 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 01:01:55,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:01:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 01:01:55,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 01:01:55,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:01:55,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:01:55,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:01:55,595 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:01:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:01:55,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1502935322, now seen corresponding path program 1 times [2020-09-25 01:01:55,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:01:55,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095250225] [2020-09-25 01:01:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:01:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:01:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:56,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:56,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:56,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:57,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:01:59,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:00,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:00,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 01:02:00,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 01:02:00,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 01:02:00,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:02:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 01:02:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 01:02:00,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:02:00,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:02:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:00,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:00,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:02:00,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:00,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:02:00,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:02:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:02:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 01:02:00,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:02:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:00,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:00,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:00,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 01:02:00,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 01:02:00,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:02:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:00,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 01:02:00,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:02:00,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095250225] [2020-09-25 01:02:00,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:02:00,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:02:00,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11194563] [2020-09-25 01:02:00,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:02:00,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:02:00,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:02:00,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:02:00,934 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-25 01:02:03,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:02:03,071 INFO L93 Difference]: Finished difference Result 1677 states and 2175 transitions. [2020-09-25 01:02:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:02:03,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 01:02:03,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:02:03,078 INFO L225 Difference]: With dead ends: 1677 [2020-09-25 01:02:03,079 INFO L226 Difference]: Without dead ends: 1086 [2020-09-25 01:02:03,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:02:03,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-09-25 01:02:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 881. [2020-09-25 01:02:03,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 01:02:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 01:02:03,126 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 160 [2020-09-25 01:02:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:02:03,127 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 01:02:03,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:02:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 01:02:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 01:02:03,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:02:03,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:03,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:02:03,133 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:02:03,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:02:03,133 INFO L82 PathProgramCache]: Analyzing trace with hash -916548164, now seen corresponding path program 1 times [2020-09-25 01:02:03,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:02:03,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832060372] [2020-09-25 01:02:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:02:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:03,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:08,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:08,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 01:02:08,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:02:08,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 01:02:08,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:02:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 01:02:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 01:02:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:08,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:02:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:08,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:08,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:02:08,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 01:02:08,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:02:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:08,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:02:08,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:02:08,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:02:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:08,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:08,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:08,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 01:02:08,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 01:02:08,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:02:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:08,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 01:02:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:02:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:02:08,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832060372] [2020-09-25 01:02:08,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:02:08,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 01:02:08,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318894284] [2020-09-25 01:02:08,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:02:08,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:02:08,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:02:08,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:02:08,565 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 6 states. [2020-09-25 01:02:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:02:11,550 INFO L93 Difference]: Finished difference Result 2977 states and 3982 transitions. [2020-09-25 01:02:11,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 01:02:11,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-09-25 01:02:11,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:02:11,568 INFO L225 Difference]: With dead ends: 2977 [2020-09-25 01:02:11,568 INFO L226 Difference]: Without dead ends: 2118 [2020-09-25 01:02:11,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:02:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2020-09-25 01:02:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1703. [2020-09-25 01:02:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1703 states. [2020-09-25 01:02:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2254 transitions. [2020-09-25 01:02:11,661 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2254 transitions. Word has length 168 [2020-09-25 01:02:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:02:11,666 INFO L479 AbstractCegarLoop]: Abstraction has 1703 states and 2254 transitions. [2020-09-25 01:02:11,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:02:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2254 transitions. [2020-09-25 01:02:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 01:02:11,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:02:11,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:11,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:02:11,678 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:02:11,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:02:11,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1654545545, now seen corresponding path program 1 times [2020-09-25 01:02:11,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:02:11,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879441229] [2020-09-25 01:02:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:02:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:11,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:11,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:13,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:16,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:16,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:16,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 01:02:16,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 01:02:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 01:02:16,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:02:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 01:02:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 01:02:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:16,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:02:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:02:16,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:02:16,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:02:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:02:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:02:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:16,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:16,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 01:02:16,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:16,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 01:02:16,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:02:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 01:02:16,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:02:17,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879441229] [2020-09-25 01:02:17,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:02:17,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:02:17,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208388842] [2020-09-25 01:02:17,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:02:17,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:02:17,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:02:17,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:02:17,020 INFO L87 Difference]: Start difference. First operand 1703 states and 2254 transitions. Second operand 5 states. [2020-09-25 01:02:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:02:18,878 INFO L93 Difference]: Finished difference Result 4458 states and 6187 transitions. [2020-09-25 01:02:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:02:18,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-09-25 01:02:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:02:18,895 INFO L225 Difference]: With dead ends: 4458 [2020-09-25 01:02:18,896 INFO L226 Difference]: Without dead ends: 2777 [2020-09-25 01:02:18,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:02:18,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2020-09-25 01:02:18,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2763. [2020-09-25 01:02:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2763 states. [2020-09-25 01:02:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3687 transitions. [2020-09-25 01:02:18,993 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3687 transitions. Word has length 172 [2020-09-25 01:02:18,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:02:18,993 INFO L479 AbstractCegarLoop]: Abstraction has 2763 states and 3687 transitions. [2020-09-25 01:02:18,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:02:18,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3687 transitions. [2020-09-25 01:02:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 01:02:19,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:02:19,007 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:02:19,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:02:19,007 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:02:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:02:19,008 INFO L82 PathProgramCache]: Analyzing trace with hash -452213321, now seen corresponding path program 1 times [2020-09-25 01:02:19,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:02:19,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041983674] [2020-09-25 01:02:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:02:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:19,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:24,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 01:02:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:02:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 01:02:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 01:02:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 01:02:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 01:02:24,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:24,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:02:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:24,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:24,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:02:24,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:02:24,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:02:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:24,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:02:24,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:24,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:02:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:24,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:24,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 01:02:24,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:24,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 01:02:24,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:24,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:02:24,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:02:24,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:02:24,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 01:02:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:24,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:24,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:24,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 01:02:24,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 01:02:24,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:02:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 01:02:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 01:02:24,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041983674] [2020-09-25 01:02:24,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:02:24,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 01:02:24,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714953566] [2020-09-25 01:02:24,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:02:24,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:02:24,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:02:24,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:02:24,958 INFO L87 Difference]: Start difference. First operand 2763 states and 3687 transitions. Second operand 8 states. [2020-09-25 01:02:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:02:28,248 INFO L93 Difference]: Finished difference Result 6221 states and 8477 transitions. [2020-09-25 01:02:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 01:02:28,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-25 01:02:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:02:28,269 INFO L225 Difference]: With dead ends: 6221 [2020-09-25 01:02:28,269 INFO L226 Difference]: Without dead ends: 3382 [2020-09-25 01:02:28,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:02:28,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2020-09-25 01:02:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3363. [2020-09-25 01:02:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3363 states. [2020-09-25 01:02:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4349 transitions. [2020-09-25 01:02:28,378 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4349 transitions. Word has length 212 [2020-09-25 01:02:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:02:28,379 INFO L479 AbstractCegarLoop]: Abstraction has 3363 states and 4349 transitions. [2020-09-25 01:02:28,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:02:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4349 transitions. [2020-09-25 01:02:28,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 01:02:28,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:02:28,394 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, 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] [2020-09-25 01:02:28,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:02:28,394 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:02:28,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:02:28,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1234844570, now seen corresponding path program 1 times [2020-09-25 01:02:28,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:02:28,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826325246] [2020-09-25 01:02:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:02:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:28,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:28,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:31,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:31,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:33,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:33,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 01:02:33,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 01:02:33,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 01:02:33,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:33,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:02:33,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 01:02:33,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 01:02:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:02:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:33,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:33,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:33,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:02:33,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:33,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:02:33,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:02:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:02:33,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:33,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:02:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:02:33,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:02:33,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:02:33,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 01:02:33,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:02:33,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 01:02:33,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:02:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:02:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:02:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 01:02:33,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:02:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:02:33,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826325246] [2020-09-25 01:02:33,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:02:33,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:02:33,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751765195] [2020-09-25 01:02:33,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:02:33,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:02:33,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:02:33,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:02:33,763 INFO L87 Difference]: Start difference. First operand 3363 states and 4349 transitions. Second operand 5 states.