/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:19:07,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:19:07,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:19:07,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:19:07,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:19:07,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:19:07,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:19:07,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:19:07,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:19:07,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:19:07,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:19:07,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:19:07,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:19:07,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:19:07,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:19:07,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:19:07,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:19:07,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:19:07,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:19:07,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:19:07,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:19:07,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:19:07,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:19:07,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:19:07,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:19:07,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:19:07,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:19:07,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:19:07,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:19:07,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:19:07,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:19:07,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:19:07,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:19:07,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:19:07,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:19:07,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:19:07,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:19:07,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:19:07,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:19:07,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:19:07,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:19:07,303 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 [2020-10-12 14:19:07,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:19:07,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:19:07,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:19:07,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:19:07,346 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:19:07,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:19:07,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:19:07,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:19:07,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:19:07,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:19:07,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:19:07,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:19:07,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:19:07,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:19:07,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:19:07,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:19:07,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:19:07,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:19:07,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:19:07,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:19:07,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:19:07,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:19:07,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:19:07,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:19:07,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:19:07,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:19:07,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:19:07,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:19:07,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:19:07,351 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:19:07,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:19:07,713 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:19:07,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:19:07,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:19:07,724 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:19:07,725 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label48.c [2020-10-12 14:19:07,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b19d6eb38/57295a5e544347ec837568eb0ebd58a6/FLAGd271286f0 [2020-10-12 14:19:08,617 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:19:08,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label48.c [2020-10-12 14:19:08,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b19d6eb38/57295a5e544347ec837568eb0ebd58a6/FLAGd271286f0 [2020-10-12 14:19:08,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b19d6eb38/57295a5e544347ec837568eb0ebd58a6 [2020-10-12 14:19:08,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:19:08,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:19:08,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:19:08,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:19:08,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:19:08,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:19:08" (1/1) ... [2020-10-12 14:19:08,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713e8a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:08, skipping insertion in model container [2020-10-12 14:19:08,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:19:08" (1/1) ... [2020-10-12 14:19:08,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:19:08,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:19:09,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:19:09,953 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:19:10,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:19:10,288 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:19:10,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:10 WrapperNode [2020-10-12 14:19:10,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:19:10,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:19:10,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:19:10,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:19:10,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:10" (1/1) ... [2020-10-12 14:19:10,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:10" (1/1) ... [2020-10-12 14:19:10,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:10" (1/1) ... [2020-10-12 14:19:10,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:10" (1/1) ... [2020-10-12 14:19:10,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:10" (1/1) ... [2020-10-12 14:19:10,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:10" (1/1) ... [2020-10-12 14:19:10,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:10" (1/1) ... [2020-10-12 14:19:10,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:19:10,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:19:10,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:19:10,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:19:10,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:10" (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 [2020-10-12 14:19:10,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:19:10,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:19:10,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:19:10,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:19:10,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:19:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:19:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:19:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:19:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:19:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:19:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:19:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:19:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:19:19,076 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:19:19,076 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:19:19,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:19:19 BoogieIcfgContainer [2020-10-12 14:19:19,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:19:19,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:19:19,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:19:19,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:19:19,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:19:08" (1/3) ... [2020-10-12 14:19:19,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6191f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:19:19, skipping insertion in model container [2020-10-12 14:19:19,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:10" (2/3) ... [2020-10-12 14:19:19,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6191f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:19:19, skipping insertion in model container [2020-10-12 14:19:19,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:19:19" (3/3) ... [2020-10-12 14:19:19,101 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label48.c [2020-10-12 14:19:19,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:19:19,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:19:19,131 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:19:19,160 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:19:19,160 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:19:19,160 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:19:19,160 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:19:19,160 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:19:19,161 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:19:19,161 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:19:19,161 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:19:19,190 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:19:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 14:19:19,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:19,204 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] [2020-10-12 14:19:19,204 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:19,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:19,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1735320205, now seen corresponding path program 1 times [2020-10-12 14:19:19,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:19,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500037617] [2020-10-12 14:19:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:19,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:19,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 14:19:19,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-12 14:19:19,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:19,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:19:19,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:19:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 14:19:19,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:19:19,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:19:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:19,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:19,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:19,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:19:19,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:19,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 14:19:19,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:19:19,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:19:19,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500037617] [2020-10-12 14:19:19,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:19:19,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:19:19,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075183006] [2020-10-12 14:19:19,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:19:19,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:19:19,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:19:19,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:19:19,943 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-12 14:19:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:19:26,358 INFO L93 Difference]: Finished difference Result 1198 states and 2162 transitions. [2020-10-12 14:19:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:19:26,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-12 14:19:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:19:26,385 INFO L225 Difference]: With dead ends: 1198 [2020-10-12 14:19:26,385 INFO L226 Difference]: Without dead ends: 696 [2020-10-12 14:19:26,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:19:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-12 14:19:26,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 688. [2020-10-12 14:19:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-12 14:19:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1008 transitions. [2020-10-12 14:19:26,524 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1008 transitions. Word has length 33 [2020-10-12 14:19:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:19:26,525 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1008 transitions. [2020-10-12 14:19:26,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:19:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1008 transitions. [2020-10-12 14:19:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 14:19:26,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:26,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:19:26,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:19:26,532 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:26,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:26,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1696141066, now seen corresponding path program 1 times [2020-10-12 14:19:26,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:26,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954095217] [2020-10-12 14:19:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:28,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:28,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:19:28,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:19:28,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-10-12 14:19:28,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:19:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:19:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:19:28,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:19:28,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:19:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:28,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:28,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:28,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:19:28,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 14:19:28,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:28,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:19:28,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 14:19:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:19:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:28,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:28,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:19:28,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 14:19:28,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:19:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:19:28,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:19:28,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954095217] [2020-10-12 14:19:28,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:19:28,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:19:28,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113779021] [2020-10-12 14:19:28,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:19:28,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:19:28,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:19:28,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:19:28,721 INFO L87 Difference]: Start difference. First operand 688 states and 1008 transitions. Second operand 7 states. [2020-10-12 14:19:38,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:19:38,206 INFO L93 Difference]: Finished difference Result 2034 states and 2988 transitions. [2020-10-12 14:19:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:19:38,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-10-12 14:19:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:19:38,217 INFO L225 Difference]: With dead ends: 2034 [2020-10-12 14:19:38,218 INFO L226 Difference]: Without dead ends: 1352 [2020-10-12 14:19:38,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:19:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-10-12 14:19:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1330. [2020-10-12 14:19:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-10-12 14:19:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1719 transitions. [2020-10-12 14:19:38,322 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1719 transitions. Word has length 102 [2020-10-12 14:19:38,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:19:38,323 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1719 transitions. [2020-10-12 14:19:38,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:19:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1719 transitions. [2020-10-12 14:19:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-12 14:19:38,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:38,343 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:19:38,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:19:38,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:38,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1246812198, now seen corresponding path program 1 times [2020-10-12 14:19:38,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:38,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336952583] [2020-10-12 14:19:38,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:38,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:38,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:39,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:41,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:42,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:42,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-12 14:19:42,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:19:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4556 [2020-10-12 14:19:42,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 14:19:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:19:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-12 14:19:42,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:43,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:19:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:43,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:43,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:43,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:19:43,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:19:43,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:43,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:19:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:19:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:43,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:19:43,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:19:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 14:19:43,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:19:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:19:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:19:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:43,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:43,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:43,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:19:43,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:19:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-12 14:19:43,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:19:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:19:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 16 proven. 111 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 14:19:44,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336952583] [2020-10-12 14:19:44,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:19:44,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 14:19:44,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434105581] [2020-10-12 14:19:44,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 14:19:44,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:19:44,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 14:19:44,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:19:44,642 INFO L87 Difference]: Start difference. First operand 1330 states and 1719 transitions. Second operand 12 states. [2020-10-12 14:19:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:19:57,880 INFO L93 Difference]: Finished difference Result 1792 states and 2477 transitions. [2020-10-12 14:19:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 14:19:57,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 207 [2020-10-12 14:19:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:19:57,900 INFO L225 Difference]: With dead ends: 1792 [2020-10-12 14:19:57,900 INFO L226 Difference]: Without dead ends: 1790 [2020-10-12 14:19:57,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992 [2020-10-12 14:19:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2020-10-12 14:19:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1664. [2020-10-12 14:19:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-10-12 14:19:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2306 transitions. [2020-10-12 14:19:57,999 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2306 transitions. Word has length 207 [2020-10-12 14:19:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:19:58,000 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2306 transitions. [2020-10-12 14:19:58,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 14:19:58,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2306 transitions. [2020-10-12 14:19:58,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-12 14:19:58,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:58,005 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:19:58,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:19:58,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:58,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:58,006 INFO L82 PathProgramCache]: Analyzing trace with hash 87306099, now seen corresponding path program 1 times [2020-10-12 14:19:58,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:58,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631819343] [2020-10-12 14:19:58,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:00,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:03,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:03,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-12 14:20:03,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 14:20:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 14:20:03,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:20:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:20:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-12 14:20:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:03,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:03,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:03,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:03,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:03,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:20:03,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:20:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:03,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:03,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:03,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:20:03,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 14:20:03,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:03,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:03,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:03,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:20:03,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:03,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:20:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:03,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:04,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:04,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 14:20:04,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:20:04,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-12 14:20:04,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:20:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 14:20:04,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 6 proven. 131 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 14:20:04,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631819343] [2020-10-12 14:20:04,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:04,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 14:20:04,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051237750] [2020-10-12 14:20:04,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 14:20:04,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:04,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 14:20:04,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:20:04,849 INFO L87 Difference]: Start difference. First operand 1664 states and 2306 transitions. Second operand 12 states. [2020-10-12 14:20:16,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:16,085 INFO L93 Difference]: Finished difference Result 3302 states and 4724 transitions. [2020-10-12 14:20:16,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 14:20:16,086 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 251 [2020-10-12 14:20:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:16,102 INFO L225 Difference]: With dead ends: 3302 [2020-10-12 14:20:16,102 INFO L226 Difference]: Without dead ends: 2262 [2020-10-12 14:20:16,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 14:20:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2020-10-12 14:20:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1987. [2020-10-12 14:20:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-10-12 14:20:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2649 transitions. [2020-10-12 14:20:16,184 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2649 transitions. Word has length 251 [2020-10-12 14:20:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:16,185 INFO L479 AbstractCegarLoop]: Abstraction has 1987 states and 2649 transitions. [2020-10-12 14:20:16,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 14:20:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2649 transitions. [2020-10-12 14:20:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-12 14:20:16,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:16,193 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:20:16,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:20:16,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:16,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1240058123, now seen corresponding path program 1 times [2020-10-12 14:20:16,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:16,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212141907] [2020-10-12 14:20:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:18,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:18,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-12 14:20:18,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:20:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2634 [2020-10-12 14:20:18,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:20:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:20:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-12 14:20:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:19,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:19,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:19,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:20:19,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:20:19,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:19,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:19,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:20:19,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-12 14:20:19,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:20:19,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-12 14:20:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:19,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:19,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:20:19,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:19,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 14:20:19,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-12 14:20:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:19,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 52 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:20:20,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212141907] [2020-10-12 14:20:20,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:20,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:20:20,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464456287] [2020-10-12 14:20:20,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:20:20,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:20,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:20:20,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:20:20,128 INFO L87 Difference]: Start difference. First operand 1987 states and 2649 transitions. Second operand 7 states. [2020-10-12 14:20:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:30,952 INFO L93 Difference]: Finished difference Result 3712 states and 5049 transitions. [2020-10-12 14:20:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:20:30,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-12 14:20:30,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:30,964 INFO L225 Difference]: With dead ends: 3712 [2020-10-12 14:20:30,964 INFO L226 Difference]: Without dead ends: 2038 [2020-10-12 14:20:30,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:20:30,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2020-10-12 14:20:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1984. [2020-10-12 14:20:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1984 states. [2020-10-12 14:20:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 2639 transitions. [2020-10-12 14:20:31,025 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 2639 transitions. Word has length 329 [2020-10-12 14:20:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:31,026 INFO L479 AbstractCegarLoop]: Abstraction has 1984 states and 2639 transitions. [2020-10-12 14:20:31,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:20:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 2639 transitions. [2020-10-12 14:20:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-12 14:20:31,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:31,034 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:31,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:20:31,035 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1797874420, now seen corresponding path program 1 times [2020-10-12 14:20:31,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:31,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950958452] [2020-10-12 14:20:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:31,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:31,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-12 14:20:31,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:31,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-12 14:20:31,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:20:31,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 14:20:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:31,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:31,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:31,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:20:31,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:31,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:32,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:32,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:20:32,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:32,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 14:20:32,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:20:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:32,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:20:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:32,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:32,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:20:32,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:32,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 14:20:32,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 14:20:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:20:32,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950958452] [2020-10-12 14:20:32,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:32,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:20:32,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957342617] [2020-10-12 14:20:32,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:20:32,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:32,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:20:32,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:20:32,738 INFO L87 Difference]: Start difference. First operand 1984 states and 2639 transitions. Second operand 7 states. [2020-10-12 14:20:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:41,531 INFO L93 Difference]: Finished difference Result 4672 states and 6633 transitions. [2020-10-12 14:20:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:20:41,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2020-10-12 14:20:41,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:41,546 INFO L225 Difference]: With dead ends: 4672 [2020-10-12 14:20:41,546 INFO L226 Difference]: Without dead ends: 3001 [2020-10-12 14:20:41,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:20:41,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-10-12 14:20:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2643. [2020-10-12 14:20:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2643 states. [2020-10-12 14:20:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3416 transitions. [2020-10-12 14:20:41,631 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3416 transitions. Word has length 403 [2020-10-12 14:20:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:41,631 INFO L479 AbstractCegarLoop]: Abstraction has 2643 states and 3416 transitions. [2020-10-12 14:20:41,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:20:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3416 transitions. [2020-10-12 14:20:41,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-12 14:20:41,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:41,642 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 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] [2020-10-12 14:20:41,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:20:41,642 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:41,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:41,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1952820122, now seen corresponding path program 1 times [2020-10-12 14:20:41,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:41,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265228246] [2020-10-12 14:20:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:41,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:41,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:42,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:42,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:44,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:46,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:46,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-12 14:20:46,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:20:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 14:20:46,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 14:20:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:20:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 429 [2020-10-12 14:20:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:46,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:46,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:46,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:46,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:46,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:20:46,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:46,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:20:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:46,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:46,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:47,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:47,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:20:47,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:47,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 14:20:47,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:20:47,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:47,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:20:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:47,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:47,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:47,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:47,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:20:47,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:20:47,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-12 14:20:47,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:20:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:20:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:47,901 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-10-12 14:20:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-12 14:20:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:48,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:48,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:48,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 14:20:48,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:20:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 14:20:48,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 14:20:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 14:20:49,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265228246] [2020-10-12 14:20:49,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:49,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:20:49,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265609521] [2020-10-12 14:20:49,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 14:20:49,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:49,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 14:20:49,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:20:49,081 INFO L87 Difference]: Start difference. First operand 2643 states and 3416 transitions. Second operand 14 states. [2020-10-12 14:20:50,647 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-12 14:20:50,945 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-12 14:20:51,088 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-12 14:20:53,754 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-12 14:20:56,015 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-12 14:20:57,049 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-12 14:21:03,744 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-12 14:21:04,646 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-10-12 14:21:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:05,513 INFO L93 Difference]: Finished difference Result 6405 states and 8853 transitions. [2020-10-12 14:21:05,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 14:21:05,515 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 421 [2020-10-12 14:21:05,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:05,534 INFO L225 Difference]: With dead ends: 6405 [2020-10-12 14:21:05,535 INFO L226 Difference]: Without dead ends: 4697 [2020-10-12 14:21:05,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=494, Invalid=1762, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 14:21:05,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2020-10-12 14:21:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 3932. [2020-10-12 14:21:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3932 states. [2020-10-12 14:21:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 5088 transitions. [2020-10-12 14:21:05,652 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 5088 transitions. Word has length 421 [2020-10-12 14:21:05,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:05,653 INFO L479 AbstractCegarLoop]: Abstraction has 3932 states and 5088 transitions. [2020-10-12 14:21:05,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 14:21:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 5088 transitions. [2020-10-12 14:21:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-12 14:21:05,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:05,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:21:05,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:21:05,664 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:05,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:05,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1876418486, now seen corresponding path program 1 times [2020-10-12 14:21:05,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:05,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284996761] [2020-10-12 14:21:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:06,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:07,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:07,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-12 14:21:07,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:21:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-10-12 14:21:07,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:21:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-12 14:21:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-12 14:21:07,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:07,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:07,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:07,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:07,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:21:07,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:07,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:07,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:07,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:07,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:07,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:07,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:21:07,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 14:21:07,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 14:21:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:07,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:21:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:07,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:07,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:07,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:21:07,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:21:07,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-12 14:21:07,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:21:07,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:08,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-12 14:21:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:08,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:08,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:08,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:21:08,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 14:21:08,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 14:21:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 262 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-12 14:21:08,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284996761] [2020-10-12 14:21:08,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:08,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:21:08,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168674608] [2020-10-12 14:21:08,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:21:08,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:08,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:21:08,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:21:08,319 INFO L87 Difference]: Start difference. First operand 3932 states and 5088 transitions. Second operand 7 states. [2020-10-12 14:21:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:18,834 INFO L93 Difference]: Finished difference Result 8553 states and 11271 transitions. [2020-10-12 14:21:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:21:18,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 424 [2020-10-12 14:21:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:18,855 INFO L225 Difference]: With dead ends: 8553 [2020-10-12 14:21:18,856 INFO L226 Difference]: Without dead ends: 4917 [2020-10-12 14:21:18,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:21:18,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-12 14:21:18,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4897. [2020-10-12 14:21:18,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4897 states. [2020-10-12 14:21:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4897 states to 4897 states and 6034 transitions. [2020-10-12 14:21:18,978 INFO L78 Accepts]: Start accepts. Automaton has 4897 states and 6034 transitions. Word has length 424 [2020-10-12 14:21:18,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:18,978 INFO L479 AbstractCegarLoop]: Abstraction has 4897 states and 6034 transitions. [2020-10-12 14:21:18,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:21:18,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4897 states and 6034 transitions. [2020-10-12 14:21:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-12 14:21:18,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:18,986 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:18,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:21:18,986 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:18,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1389474786, now seen corresponding path program 1 times [2020-10-12 14:21:18,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:18,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890351944] [2020-10-12 14:21:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:19,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:22,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:22,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 528 [2020-10-12 14:21:22,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:21:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3124 [2020-10-12 14:21:22,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:21:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:21:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 14:21:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:22,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:22,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:22,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:22,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:21:22,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:22,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:22,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:22,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:21:22,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 14:21:22,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:22,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:22,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:21:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:22,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:22,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:22,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:22,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:21:22,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:22,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:21:22,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:22,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:21:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:22,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:22,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:22,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:22,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:21:22,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:21:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 14:21:22,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 14:21:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 240 proven. 27 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:21:22,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890351944] [2020-10-12 14:21:22,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:22,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:21:22,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959599660] [2020-10-12 14:21:22,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:21:22,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:22,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:21:22,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:21:22,925 INFO L87 Difference]: Start difference. First operand 4897 states and 6034 transitions. Second operand 7 states. [2020-10-12 14:21:35,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:35,241 INFO L93 Difference]: Finished difference Result 11868 states and 15700 transitions. [2020-10-12 14:21:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:21:35,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 514 [2020-10-12 14:21:35,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:35,285 INFO L225 Difference]: With dead ends: 11868 [2020-10-12 14:21:35,286 INFO L226 Difference]: Without dead ends: 8215 [2020-10-12 14:21:35,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:21:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8215 states. [2020-10-12 14:21:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8215 to 7845. [2020-10-12 14:21:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7845 states. [2020-10-12 14:21:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7845 states to 7845 states and 9687 transitions. [2020-10-12 14:21:35,557 INFO L78 Accepts]: Start accepts. Automaton has 7845 states and 9687 transitions. Word has length 514 [2020-10-12 14:21:35,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:35,558 INFO L479 AbstractCegarLoop]: Abstraction has 7845 states and 9687 transitions. [2020-10-12 14:21:35,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:21:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7845 states and 9687 transitions. [2020-10-12 14:21:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-12 14:21:35,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:35,569 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:35,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:21:35,570 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:35,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:35,570 INFO L82 PathProgramCache]: Analyzing trace with hash 638115286, now seen corresponding path program 1 times [2020-10-12 14:21:35,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:35,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815760656] [2020-10-12 14:21:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:36,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:37,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:37,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 538 [2020-10-12 14:21:37,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:21:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-12 14:21:37,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:21:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 14:21:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:37,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:37,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:37,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:21:37,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:37,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:38,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:38,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:21:38,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 14:21:38,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:38,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:38,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:38,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:21:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:38,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:21:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:38,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:38,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:38,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 14:21:38,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:21:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:38,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:21:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:38,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:38,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:38,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 14:21:38,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:38,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 14:21:38,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-12 14:21:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 190 proven. 105 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-12 14:21:38,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815760656] [2020-10-12 14:21:38,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:38,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:21:38,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841339878] [2020-10-12 14:21:38,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:21:38,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:38,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:21:38,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:21:38,723 INFO L87 Difference]: Start difference. First operand 7845 states and 9687 transitions. Second operand 7 states. [2020-10-12 14:21:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:49,361 INFO L93 Difference]: Finished difference Result 16409 states and 20407 transitions. [2020-10-12 14:21:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:21:49,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 524 [2020-10-12 14:21:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:49,391 INFO L225 Difference]: With dead ends: 16409 [2020-10-12 14:21:49,392 INFO L226 Difference]: Without dead ends: 9186 [2020-10-12 14:21:49,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:21:49,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9186 states. [2020-10-12 14:21:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9186 to 9102. [2020-10-12 14:21:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9102 states. [2020-10-12 14:21:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9102 states to 9102 states and 11072 transitions. [2020-10-12 14:21:49,637 INFO L78 Accepts]: Start accepts. Automaton has 9102 states and 11072 transitions. Word has length 524 [2020-10-12 14:21:49,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:49,638 INFO L479 AbstractCegarLoop]: Abstraction has 9102 states and 11072 transitions. [2020-10-12 14:21:49,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:21:49,639 INFO L276 IsEmpty]: Start isEmpty. Operand 9102 states and 11072 transitions. [2020-10-12 14:21:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2020-10-12 14:21:49,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:49,651 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:49,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:21:49,652 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:49,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:49,653 INFO L82 PathProgramCache]: Analyzing trace with hash 211491486, now seen corresponding path program 1 times [2020-10-12 14:21:49,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:49,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471800210] [2020-10-12 14:21:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:50,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:50,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-12 14:21:50,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-12 14:21:50,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:21:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 14:21:50,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:50,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:50,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:50,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:50,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:50,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:21:50,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:50,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:21:50,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 14:21:50,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:50,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:21:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:51,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:51,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:51,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:51,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 14:21:51,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:51,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:21:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:51,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:21:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:51,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:51,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 14:21:51,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 14:21:51,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 14:21:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 14:21:51,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471800210] [2020-10-12 14:21:51,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:51,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:21:51,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729814899] [2020-10-12 14:21:51,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:21:51,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:51,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:21:51,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:21:51,358 INFO L87 Difference]: Start difference. First operand 9102 states and 11072 transitions. Second operand 7 states. [2020-10-12 14:22:04,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:04,970 INFO L93 Difference]: Finished difference Result 20163 states and 25783 transitions. [2020-10-12 14:22:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:22:04,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 536 [2020-10-12 14:22:04,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:05,006 INFO L225 Difference]: With dead ends: 20163 [2020-10-12 14:22:05,006 INFO L226 Difference]: Without dead ends: 11683 [2020-10-12 14:22:05,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:22:05,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11683 states. [2020-10-12 14:22:05,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11683 to 11655. [2020-10-12 14:22:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11655 states. [2020-10-12 14:22:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11655 states to 11655 states and 14152 transitions. [2020-10-12 14:22:05,279 INFO L78 Accepts]: Start accepts. Automaton has 11655 states and 14152 transitions. Word has length 536 [2020-10-12 14:22:05,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:05,280 INFO L479 AbstractCegarLoop]: Abstraction has 11655 states and 14152 transitions. [2020-10-12 14:22:05,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:22:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 11655 states and 14152 transitions. [2020-10-12 14:22:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2020-10-12 14:22:05,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:05,292 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:05,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:22:05,292 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:05,293 INFO L82 PathProgramCache]: Analyzing trace with hash 954607919, now seen corresponding path program 1 times [2020-10-12 14:22:05,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:05,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212135018] [2020-10-12 14:22:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:05,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:05,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:10,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:10,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-12 14:22:10,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:22:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 14:22:10,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 14:22:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:22:10,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 525 [2020-10-12 14:22:10,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:10,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:10,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:10,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:10,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:10,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:22:10,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:22:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:10,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:11,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:11,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:22:11,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:11,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-12 14:22:11,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-12 14:22:11,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:22:11,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:22:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:11,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:11,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:22:11,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 14:22:11,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:22:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:11,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-10-12 14:22:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:11,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:12,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:12,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 14:22:12,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:22:12,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-12 14:22:12,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 14:22:12,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 80 proven. 219 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 14:22:12,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212135018] [2020-10-12 14:22:12,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:12,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:22:12,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982327832] [2020-10-12 14:22:12,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:22:12,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:12,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:22:12,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:22:12,945 INFO L87 Difference]: Start difference. First operand 11655 states and 14152 transitions. Second operand 8 states. [2020-10-12 14:22:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:28,332 INFO L93 Difference]: Finished difference Result 24273 states and 29767 transitions. [2020-10-12 14:22:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:22:28,334 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 550 [2020-10-12 14:22:28,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:28,383 INFO L225 Difference]: With dead ends: 24273 [2020-10-12 14:22:28,384 INFO L226 Difference]: Without dead ends: 13847 [2020-10-12 14:22:28,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:22:28,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13847 states. [2020-10-12 14:22:28,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13847 to 13521. [2020-10-12 14:22:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13521 states. [2020-10-12 14:22:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 16083 transitions. [2020-10-12 14:22:28,666 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 16083 transitions. Word has length 550 [2020-10-12 14:22:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:28,667 INFO L479 AbstractCegarLoop]: Abstraction has 13521 states and 16083 transitions. [2020-10-12 14:22:28,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:22:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 16083 transitions. [2020-10-12 14:22:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-12 14:22:28,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:28,679 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:28,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:22:28,680 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:28,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash -46224826, now seen corresponding path program 1 times [2020-10-12 14:22:28,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:28,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197677040] [2020-10-12 14:22:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:28,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:29,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:30,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:30,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:30,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 572 [2020-10-12 14:22:30,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:22:30,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-10-12 14:22:30,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:22:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 14:22:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:30,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:30,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:30,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:30,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:30,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:30,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:22:30,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:30,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:30,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:30,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:30,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:30,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:30,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:22:30,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 14:22:30,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:22:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:31,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:31,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:22:31,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:31,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 14:22:31,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:31,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:31,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:31,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:22:31,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:31,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:22:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:31,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:31,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:22:31,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:31,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 14:22:31,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 14:22:31,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 14:22:31,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197677040] [2020-10-12 14:22:31,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:31,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:22:31,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708973493] [2020-10-12 14:22:31,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:22:31,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:31,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:22:31,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:22:31,477 INFO L87 Difference]: Start difference. First operand 13521 states and 16083 transitions. Second operand 7 states. [2020-10-12 14:22:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:48,270 INFO L93 Difference]: Finished difference Result 28259 states and 34891 transitions. [2020-10-12 14:22:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:22:48,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-12 14:22:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:48,329 INFO L225 Difference]: With dead ends: 28259 [2020-10-12 14:22:48,329 INFO L226 Difference]: Without dead ends: 18466 [2020-10-12 14:22:48,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:22:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18466 states. [2020-10-12 14:22:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18466 to 17537. [2020-10-12 14:22:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17537 states. [2020-10-12 14:22:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17537 states to 17537 states and 21117 transitions. [2020-10-12 14:22:48,730 INFO L78 Accepts]: Start accepts. Automaton has 17537 states and 21117 transitions. Word has length 558 [2020-10-12 14:22:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:48,731 INFO L479 AbstractCegarLoop]: Abstraction has 17537 states and 21117 transitions. [2020-10-12 14:22:48,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:22:48,731 INFO L276 IsEmpty]: Start isEmpty. Operand 17537 states and 21117 transitions. [2020-10-12 14:22:48,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-12 14:22:48,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:48,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:48,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:22:48,744 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:48,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:48,744 INFO L82 PathProgramCache]: Analyzing trace with hash 444448779, now seen corresponding path program 1 times [2020-10-12 14:22:48,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:48,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796950122] [2020-10-12 14:22:48,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:48,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:49,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:51,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:51,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 593 [2020-10-12 14:22:51,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:22:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3064 [2020-10-12 14:22:51,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:22:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-12 14:22:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-12 14:22:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:52,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:52,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:22:52,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:52,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:52,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:52,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:22:52,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-12 14:22:52,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-12 14:22:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:52,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:22:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:52,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:52,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:22:52,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:52,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 14:22:52,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:22:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:22:52,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:52,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:22:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:53,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:53,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 14:22:53,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:53,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 14:22:53,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 14:22:53,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 332 proven. 114 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:22:54,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796950122] [2020-10-12 14:22:54,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:54,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:22:54,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032061634] [2020-10-12 14:22:54,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:22:54,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:54,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:22:54,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:22:54,123 INFO L87 Difference]: Start difference. First operand 17537 states and 21117 transitions. Second operand 10 states.