/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=NARROWEST --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/Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:14:48,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:14:48,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:14:48,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:14:48,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:14:48,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:14:48,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:14:48,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:14:48,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:14:48,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:14:48,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:14:48,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:14:48,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:14:48,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:14:48,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:14:48,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:14:48,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:14:48,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:14:48,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:14:48,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:14:48,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:14:48,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:14:48,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:14:48,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:14:48,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:14:48,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:14:48,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:14:48,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:14:48,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:14:48,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:14:48,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:14:48,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:14:48,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:14:48,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:14:48,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:14:48,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:14:48,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:14:48,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:14:48,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:14:48,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:14:48,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:14:48,280 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 [2020-10-13 08:14:48,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:14:48,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:14:48,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:14:48,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:14:48,320 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:14:48,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:14:48,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:14:48,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:14:48,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:14:48,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:14:48,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:14:48,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:14:48,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:14:48,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:14:48,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:14:48,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:14:48,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:14:48,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:14:48,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:14:48,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:14:48,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:14:48,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:14:48,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:14:48,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:14:48,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:14:48,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:14:48,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:14:48,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:14:48,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:14:48,326 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:14:48,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:14:48,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:14:48,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:14:48,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:14:48,649 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:14:48,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label06.c [2020-10-13 08:14:48,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e77721cac/e4d9ed9ea5124c9a975d68b084dc4017/FLAGfd0e66d94 [2020-10-13 08:14:49,476 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:14:49,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label06.c [2020-10-13 08:14:49,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e77721cac/e4d9ed9ea5124c9a975d68b084dc4017/FLAGfd0e66d94 [2020-10-13 08:14:49,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e77721cac/e4d9ed9ea5124c9a975d68b084dc4017 [2020-10-13 08:14:49,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:14:49,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:14:49,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:14:49,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:14:49,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:14:49,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:14:49" (1/1) ... [2020-10-13 08:14:49,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3ac5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:49, skipping insertion in model container [2020-10-13 08:14:49,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:14:49" (1/1) ... [2020-10-13 08:14:49,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:14:49,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:14:51,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:14:51,173 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:14:51,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:14:51,939 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:14:51,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:51 WrapperNode [2020-10-13 08:14:51,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:14:51,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:14:51,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:14:51,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:14:51,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:51" (1/1) ... [2020-10-13 08:14:51,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:51" (1/1) ... [2020-10-13 08:14:52,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:51" (1/1) ... [2020-10-13 08:14:52,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:51" (1/1) ... [2020-10-13 08:14:52,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:51" (1/1) ... [2020-10-13 08:14:52,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:51" (1/1) ... [2020-10-13 08:14:52,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:51" (1/1) ... [2020-10-13 08:14:52,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:14:52,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:14:52,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:14:52,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:14:52,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:51" (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 [2020-10-13 08:14:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:14:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:14:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:14:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:14:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:14:52,330 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:14:52,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:14:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:14:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:14:52,331 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:14:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:14:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:14:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:14:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:14:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:14:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:14:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:14:57,305 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:14:57,305 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:14:57,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:14:57 BoogieIcfgContainer [2020-10-13 08:14:57,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:14:57,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:14:57,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:14:57,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:14:57,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:14:49" (1/3) ... [2020-10-13 08:14:57,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3bcedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:14:57, skipping insertion in model container [2020-10-13 08:14:57,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:51" (2/3) ... [2020-10-13 08:14:57,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3bcedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:14:57, skipping insertion in model container [2020-10-13 08:14:57,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:14:57" (3/3) ... [2020-10-13 08:14:57,339 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label06.c [2020-10-13 08:14:57,350 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:14:57,363 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:14:57,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:14:57,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:14:57,414 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:14:57,414 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:14:57,414 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:14:57,414 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:14:57,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:14:57,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:14:57,415 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:14:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:14:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 08:14:57,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:14:57,474 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] [2020-10-13 08:14:57,474 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:14:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:14:57,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1616401258, now seen corresponding path program 1 times [2020-10-13 08:14:57,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:14:57,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985125385] [2020-10-13 08:14:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:14:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:57,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:58,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:58,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 08:14:58,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:58,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-13 08:14:58,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:14:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:14:58,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 08:14:58,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:14:58,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:14:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:14:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:14:58,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:14:58,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:14:58,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:14:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:14:58,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:14:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:14:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:14:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:14:58,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:14:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:14:58,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985125385] [2020-10-13 08:14:58,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:14:58,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:14:58,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421228636] [2020-10-13 08:14:58,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:14:58,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:14:58,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:14:58,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:14:58,272 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:15:06,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:06,475 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-13 08:15:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:06,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-13 08:15:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:06,535 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:15:06,536 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:15:06,552 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 [2020-10-13 08:15:06,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:15:06,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-13 08:15:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-13 08:15:06,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-13 08:15:06,753 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 29 [2020-10-13 08:15:06,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:06,755 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-13 08:15:06,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:15:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-13 08:15:06,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 08:15:06,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:06,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:06,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:15:06,765 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash -428207165, now seen corresponding path program 1 times [2020-10-13 08:15:06,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:06,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439483456] [2020-10-13 08:15:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:06,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:07,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:15:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:15:07,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-13 08:15:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:15:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:15:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:15:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:07,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:07,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:07,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:07,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:15:07,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:07,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:07,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:15:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:07,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:07,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:07,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:15:07,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:07,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:15:07,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:15:07,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:07,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439483456] [2020-10-13 08:15:07,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:07,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:07,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243375765] [2020-10-13 08:15:07,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:07,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:07,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:07,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:07,710 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 5 states. [2020-10-13 08:15:16,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:16,584 INFO L93 Difference]: Finished difference Result 4673 states and 7281 transitions. [2020-10-13 08:15:16,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:16,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 08:15:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:16,610 INFO L225 Difference]: With dead ends: 4673 [2020-10-13 08:15:16,610 INFO L226 Difference]: Without dead ends: 3124 [2020-10-13 08:15:16,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:15:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-10-13 08:15:16,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3117. [2020-10-13 08:15:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2020-10-13 08:15:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4281 transitions. [2020-10-13 08:15:16,714 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4281 transitions. Word has length 104 [2020-10-13 08:15:16,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:16,717 INFO L479 AbstractCegarLoop]: Abstraction has 3117 states and 4281 transitions. [2020-10-13 08:15:16,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:16,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4281 transitions. [2020-10-13 08:15:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 08:15:16,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:16,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:16,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:15:16,730 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:16,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:16,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1110021871, now seen corresponding path program 1 times [2020-10-13 08:15:16,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:16,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769143181] [2020-10-13 08:15:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:17,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:17,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:17,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:15:17,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:15:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-13 08:15:17,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 08:15:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:15:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:17,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:17,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:17,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:17,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:17,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:17,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:15:17,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:17,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:17,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:17,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:17,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:17,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:15:17,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:17,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:15:17,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:17,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:17,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:17,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:15:17,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:17,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769143181] [2020-10-13 08:15:17,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:17,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:17,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135309818] [2020-10-13 08:15:17,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:17,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:17,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:17,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:17,951 INFO L87 Difference]: Start difference. First operand 3117 states and 4281 transitions. Second operand 5 states. [2020-10-13 08:15:28,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:28,367 INFO L93 Difference]: Finished difference Result 9342 states and 13008 transitions. [2020-10-13 08:15:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:28,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 08:15:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:28,407 INFO L225 Difference]: With dead ends: 9342 [2020-10-13 08:15:28,408 INFO L226 Difference]: Without dead ends: 6231 [2020-10-13 08:15:28,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:15:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2020-10-13 08:15:28,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 6220. [2020-10-13 08:15:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-10-13 08:15:28,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 8111 transitions. [2020-10-13 08:15:28,647 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 8111 transitions. Word has length 110 [2020-10-13 08:15:28,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:28,648 INFO L479 AbstractCegarLoop]: Abstraction has 6220 states and 8111 transitions. [2020-10-13 08:15:28,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:28,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 8111 transitions. [2020-10-13 08:15:28,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 08:15:28,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:28,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:28,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:15:28,651 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:28,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:28,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1672843803, now seen corresponding path program 1 times [2020-10-13 08:15:28,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:28,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919832822] [2020-10-13 08:15:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:28,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:28,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:29,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:29,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:29,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 08:15:29,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:15:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-13 08:15:29,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 08:15:29,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:15:29,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:29,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:29,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:29,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:29,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:15:29,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:29,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:29,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:29,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:29,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:15:29,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:15:29,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:15:29,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:30,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919832822] [2020-10-13 08:15:30,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:30,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:30,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999784743] [2020-10-13 08:15:30,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:30,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:30,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:30,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:30,031 INFO L87 Difference]: Start difference. First operand 6220 states and 8111 transitions. Second operand 5 states. [2020-10-13 08:15:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:40,709 INFO L93 Difference]: Finished difference Result 18644 states and 24772 transitions. [2020-10-13 08:15:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:40,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 08:15:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:40,768 INFO L225 Difference]: With dead ends: 18644 [2020-10-13 08:15:40,768 INFO L226 Difference]: Without dead ends: 12430 [2020-10-13 08:15:40,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:15:40,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12430 states. [2020-10-13 08:15:41,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12430 to 12426. [2020-10-13 08:15:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12426 states. [2020-10-13 08:15:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12426 states to 12426 states and 15944 transitions. [2020-10-13 08:15:41,147 INFO L78 Accepts]: Start accepts. Automaton has 12426 states and 15944 transitions. Word has length 116 [2020-10-13 08:15:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:41,149 INFO L479 AbstractCegarLoop]: Abstraction has 12426 states and 15944 transitions. [2020-10-13 08:15:41,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 12426 states and 15944 transitions. [2020-10-13 08:15:41,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 08:15:41,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:41,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:41,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:15:41,157 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:41,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:41,157 INFO L82 PathProgramCache]: Analyzing trace with hash 245870510, now seen corresponding path program 1 times [2020-10-13 08:15:41,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:41,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490190946] [2020-10-13 08:15:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:41,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:43,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:43,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 08:15:43,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:15:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1910 [2020-10-13 08:15:43,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 08:15:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:15:43,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:43,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:43,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:43,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:43,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:15:43,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:43,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:43,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:43,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:15:43,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:43,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 08:15:43,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:43,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:43,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:43,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 08:15:43,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:43,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490190946] [2020-10-13 08:15:43,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:43,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:43,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235830671] [2020-10-13 08:15:43,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:43,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:43,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:43,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:43,562 INFO L87 Difference]: Start difference. First operand 12426 states and 15944 transitions. Second operand 5 states. [2020-10-13 08:15:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:55,551 INFO L93 Difference]: Finished difference Result 29494 states and 39210 transitions. [2020-10-13 08:15:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:55,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-13 08:15:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:55,632 INFO L225 Difference]: With dead ends: 29494 [2020-10-13 08:15:55,636 INFO L226 Difference]: Without dead ends: 17074 [2020-10-13 08:15:55,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:15:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17074 states. [2020-10-13 08:15:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17074 to 17070. [2020-10-13 08:15:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17070 states. [2020-10-13 08:15:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17070 states to 17070 states and 21542 transitions. [2020-10-13 08:15:56,098 INFO L78 Accepts]: Start accepts. Automaton has 17070 states and 21542 transitions. Word has length 177 [2020-10-13 08:15:56,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:56,099 INFO L479 AbstractCegarLoop]: Abstraction has 17070 states and 21542 transitions. [2020-10-13 08:15:56,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 17070 states and 21542 transitions. [2020-10-13 08:15:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 08:15:56,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:56,104 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:15:56,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:15:56,105 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1095880410, now seen corresponding path program 1 times [2020-10-13 08:15:56,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:56,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743212186] [2020-10-13 08:15:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:56,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:57,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:58,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:58,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 08:15:58,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:15:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2797 [2020-10-13 08:15:58,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-13 08:15:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:15:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:59,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:59,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:59,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:59,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:59,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:59,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:15:59,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:59,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:59,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:59,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:15:59,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:15:59,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:59,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:59,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 08:15:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:59,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:59,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:15:59,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:59,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:15:59,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 08:15:59,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 08:15:59,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743212186] [2020-10-13 08:15:59,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:59,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:59,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796258550] [2020-10-13 08:15:59,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:59,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:59,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:59,334 INFO L87 Difference]: Start difference. First operand 17070 states and 21542 transitions. Second operand 5 states. [2020-10-13 08:16:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:13,743 INFO L93 Difference]: Finished difference Result 47305 states and 61370 transitions. [2020-10-13 08:16:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:13,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-13 08:16:13,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:13,866 INFO L225 Difference]: With dead ends: 47305 [2020-10-13 08:16:13,867 INFO L226 Difference]: Without dead ends: 30241 [2020-10-13 08:16:13,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:13,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30241 states. [2020-10-13 08:16:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30241 to 30237. [2020-10-13 08:16:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30237 states. [2020-10-13 08:16:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30237 states to 30237 states and 38292 transitions. [2020-10-13 08:16:14,717 INFO L78 Accepts]: Start accepts. Automaton has 30237 states and 38292 transitions. Word has length 211 [2020-10-13 08:16:14,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:14,718 INFO L479 AbstractCegarLoop]: Abstraction has 30237 states and 38292 transitions. [2020-10-13 08:16:14,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:14,718 INFO L276 IsEmpty]: Start isEmpty. Operand 30237 states and 38292 transitions. [2020-10-13 08:16:14,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-13 08:16:14,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:14,725 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:16:14,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:16:14,726 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:14,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:14,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1818103166, now seen corresponding path program 1 times [2020-10-13 08:16:14,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:14,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879173241] [2020-10-13 08:16:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:18,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:18,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 08:16:18,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:16:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4190 [2020-10-13 08:16:18,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 08:16:18,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:16:18,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:19,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:19,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:19,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:19,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:19,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:16:19,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:19,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:19,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:19,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:16:19,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:16:19,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:19,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 08:16:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:19,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:19,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 08:16:19,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:16:19,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 08:16:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 08:16:19,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879173241] [2020-10-13 08:16:19,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:19,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:19,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070514068] [2020-10-13 08:16:19,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:19,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:19,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:19,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:19,326 INFO L87 Difference]: Start difference. First operand 30237 states and 38292 transitions. Second operand 5 states. [2020-10-13 08:16:35,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:35,833 INFO L93 Difference]: Finished difference Result 75196 states and 97976 transitions. [2020-10-13 08:16:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:35,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-13 08:16:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:36,045 INFO L225 Difference]: With dead ends: 75196 [2020-10-13 08:16:36,045 INFO L226 Difference]: Without dead ends: 44965 [2020-10-13 08:16:36,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:36,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44965 states. [2020-10-13 08:16:37,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44965 to 44961. [2020-10-13 08:16:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44961 states. [2020-10-13 08:16:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44961 states to 44961 states and 57965 transitions. [2020-10-13 08:16:37,462 INFO L78 Accepts]: Start accepts. Automaton has 44961 states and 57965 transitions. Word has length 213 [2020-10-13 08:16:37,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:37,463 INFO L479 AbstractCegarLoop]: Abstraction has 44961 states and 57965 transitions. [2020-10-13 08:16:37,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 44961 states and 57965 transitions. [2020-10-13 08:16:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 08:16:37,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:37,491 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:16:37,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:16:37,492 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:37,492 INFO L82 PathProgramCache]: Analyzing trace with hash -557477981, now seen corresponding path program 1 times [2020-10-13 08:16:37,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:37,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347465353] [2020-10-13 08:16:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:37,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:38,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:38,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-13 08:16:38,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:38,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-13 08:16:38,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-13 08:16:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:16:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:38,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:38,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:38,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:38,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:16:38,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:38,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:38,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:38,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:38,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:16:38,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:16:38,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:38,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:16:38,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-13 08:16:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:38,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:38,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:16:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 08:16:38,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-13 08:16:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-13 08:16:38,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347465353] [2020-10-13 08:16:38,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:38,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:38,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070159492] [2020-10-13 08:16:38,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:38,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:38,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:38,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:38,945 INFO L87 Difference]: Start difference. First operand 44961 states and 57965 transitions. Second operand 5 states. [2020-10-13 08:16:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:57,082 INFO L93 Difference]: Finished difference Result 102310 states and 136401 transitions. [2020-10-13 08:16:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:57,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-13 08:16:57,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:57,421 INFO L225 Difference]: With dead ends: 102310 [2020-10-13 08:16:57,421 INFO L226 Difference]: Without dead ends: 57355 [2020-10-13 08:16:57,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57355 states. [2020-10-13 08:16:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57355 to 57351. [2020-10-13 08:16:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57351 states. [2020-10-13 08:16:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57351 states to 57351 states and 74639 transitions. [2020-10-13 08:16:58,850 INFO L78 Accepts]: Start accepts. Automaton has 57351 states and 74639 transitions. Word has length 314 [2020-10-13 08:16:58,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:58,851 INFO L479 AbstractCegarLoop]: Abstraction has 57351 states and 74639 transitions. [2020-10-13 08:16:58,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 57351 states and 74639 transitions. [2020-10-13 08:16:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2020-10-13 08:16:58,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:58,951 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:16:58,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:16:58,952 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:58,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:58,953 INFO L82 PathProgramCache]: Analyzing trace with hash -611218844, now seen corresponding path program 1 times [2020-10-13 08:16:58,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:58,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814670432] [2020-10-13 08:16:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:59,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:04,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:04,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 605 [2020-10-13 08:17:04,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:04,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-13 08:17:04,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:04,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:17:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:17:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:17:04,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:04,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:04,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:04,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:04,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:17:04,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:17:04,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:04,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:04,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:04,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:04,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:17:04,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:04,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 08:17:04,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:04,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:17:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:04,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 08:17:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:05,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:05,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-13 08:17:05,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-13 08:17:05,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 477 [2020-10-13 08:17:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:17:05,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:17:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:05,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:05,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:05,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 08:17:05,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:05,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 08:17:05,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:05,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 44 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:17:06,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814670432] [2020-10-13 08:17:06,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:06,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:17:06,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462217046] [2020-10-13 08:17:06,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:17:06,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:06,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:17:06,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:17:06,195 INFO L87 Difference]: Start difference. First operand 57351 states and 74639 transitions. Second operand 7 states. [2020-10-13 08:17:28,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:28,811 INFO L93 Difference]: Finished difference Result 137648 states and 184790 transitions. [2020-10-13 08:17:28,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:17:28,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 591 [2020-10-13 08:17:28,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:29,226 INFO L225 Difference]: With dead ends: 137648 [2020-10-13 08:17:29,226 INFO L226 Difference]: Without dead ends: 80303 [2020-10-13 08:17:29,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:17:29,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80303 states. [2020-10-13 08:17:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80303 to 77113. [2020-10-13 08:17:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77113 states. [2020-10-13 08:17:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77113 states to 77113 states and 100036 transitions. [2020-10-13 08:17:31,058 INFO L78 Accepts]: Start accepts. Automaton has 77113 states and 100036 transitions. Word has length 591 [2020-10-13 08:17:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:31,058 INFO L479 AbstractCegarLoop]: Abstraction has 77113 states and 100036 transitions. [2020-10-13 08:17:31,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:17:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 77113 states and 100036 transitions. [2020-10-13 08:17:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2020-10-13 08:17:31,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:31,179 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:17:31,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:17:31,180 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:31,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1584734820, now seen corresponding path program 1 times [2020-10-13 08:17:31,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:31,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354982943] [2020-10-13 08:17:31,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:33,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:36,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:36,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 705 [2020-10-13 08:17:36,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:17:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 08:17:36,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:17:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:17:36,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:36,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:36,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:36,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:36,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:36,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:36,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:17:36,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:36,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:36,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:36,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:36,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:36,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:36,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:36,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:17:36,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:17:36,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:36,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:17:36,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:17:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:17:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:37,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:37,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 08:17:37,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:37,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-13 08:17:37,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 08:17:37,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:37,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-13 08:17:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:38,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:38,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-13 08:17:38,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:38,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-13 08:17:38,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 477 [2020-10-13 08:17:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:38,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:17:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:38,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:38,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 08:17:38,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:17:38,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 142 proven. 107 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 08:17:39,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354982943] [2020-10-13 08:17:39,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:39,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:17:39,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245597911] [2020-10-13 08:17:39,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:17:39,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:39,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:17:39,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:17:39,265 INFO L87 Difference]: Start difference. First operand 77113 states and 100036 transitions. Second operand 7 states. [2020-10-13 08:18:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:12,468 INFO L93 Difference]: Finished difference Result 184101 states and 249890 transitions. [2020-10-13 08:18:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:18:12,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 689 [2020-10-13 08:18:12,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:12,944 INFO L225 Difference]: With dead ends: 184101 [2020-10-13 08:18:12,944 INFO L226 Difference]: Without dead ends: 106821 [2020-10-13 08:18:13,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:18:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106821 states. [2020-10-13 08:18:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106821 to 106819. [2020-10-13 08:18:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106819 states. [2020-10-13 08:18:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106819 states to 106819 states and 141544 transitions. [2020-10-13 08:18:15,657 INFO L78 Accepts]: Start accepts. Automaton has 106819 states and 141544 transitions. Word has length 689 [2020-10-13 08:18:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:15,658 INFO L479 AbstractCegarLoop]: Abstraction has 106819 states and 141544 transitions. [2020-10-13 08:18:15,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:18:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 106819 states and 141544 transitions. [2020-10-13 08:18:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2020-10-13 08:18:15,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:15,773 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:15,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:18:15,773 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:15,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:15,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1675936512, now seen corresponding path program 1 times [2020-10-13 08:18:15,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:15,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217356908] [2020-10-13 08:18:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:20,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:21,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:21,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 743 [2020-10-13 08:18:21,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:21,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-13 08:18:21,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:21,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:18:21,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:18:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:18:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:21,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:21,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:21,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:18:21,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:18:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:21,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:21,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:21,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:21,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:18:21,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:21,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-13 08:18:21,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:21,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:21,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:18:21,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:18:21,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:21,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:18:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:21,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:21,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:21,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:18:21,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:21,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 08:18:21,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 08:18:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:21,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:21,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 08:18:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:21,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:22,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:22,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-13 08:18:22,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:22,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-13 08:18:22,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 477 [2020-10-13 08:18:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:22,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:22,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:18:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:22,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:22,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 08:18:22,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:18:22,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 66 proven. 211 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 08:18:22,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217356908] [2020-10-13 08:18:22,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:22,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:18:22,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401315863] [2020-10-13 08:18:22,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:18:22,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:22,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:18:22,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:18:22,954 INFO L87 Difference]: Start difference. First operand 106819 states and 141544 transitions. Second operand 7 states.