/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/Problem13_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:39:23,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:39:23,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:39:23,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:39:23,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:39:23,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:39:23,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:39:23,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:39:23,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:39:23,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:39:23,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:39:23,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:39:23,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:39:23,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:39:23,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:39:23,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:39:23,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:39:23,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:39:23,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:39:23,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:39:23,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:39:23,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:39:23,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:39:23,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:39:23,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:39:23,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:39:23,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:39:23,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:39:23,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:39:23,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:39:23,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:39:23,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:39:23,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:39:23,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:39:23,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:39:23,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:39:23,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:39:23,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:39:23,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:39:23,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:39:23,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:39:23,258 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 08:39:23,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:39:23,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:39:23,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:39:23,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:39:23,326 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:39:23,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:39:23,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:39:23,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:39:23,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:39:23,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:39:23,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:39:23,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:39:23,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:39:23,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:39:23,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:39:23,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:39:23,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:39:23,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:39:23,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:39:23,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:39:23,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:39:23,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:39:23,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:39:23,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:39:23,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:39:23,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:39:23,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:39:23,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:39:23,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:39:23,336 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 08:39:23,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:39:23,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:39:23,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:39:23,761 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:39:23,762 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:39:23,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label39.c [2020-10-13 08:39:23,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/263add345/6a9be07606f946c88609bb2048dbe414/FLAGa1a34ac2f [2020-10-13 08:39:24,855 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:39:24,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label39.c [2020-10-13 08:39:24,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/263add345/6a9be07606f946c88609bb2048dbe414/FLAGa1a34ac2f [2020-10-13 08:39:25,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/263add345/6a9be07606f946c88609bb2048dbe414 [2020-10-13 08:39:25,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:39:25,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:39:25,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:39:25,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:39:25,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:39:25,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:39:25" (1/1) ... [2020-10-13 08:39:25,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:25, skipping insertion in model container [2020-10-13 08:39:25,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:39:25" (1/1) ... [2020-10-13 08:39:25,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:39:25,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:39:27,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:39:27,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:39:28,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:39:28,413 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:39:28,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:28 WrapperNode [2020-10-13 08:39:28,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:39:28,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:39:28,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:39:28,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:39:28,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:28" (1/1) ... [2020-10-13 08:39:28,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:28" (1/1) ... [2020-10-13 08:39:28,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:28" (1/1) ... [2020-10-13 08:39:28,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:28" (1/1) ... [2020-10-13 08:39:28,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:28" (1/1) ... [2020-10-13 08:39:28,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:28" (1/1) ... [2020-10-13 08:39:28,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:28" (1/1) ... [2020-10-13 08:39:28,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:39:28,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:39:28,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:39:28,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:39:28,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:28" (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 08:39:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:39:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:39:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:39:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:39:28,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:39:28,793 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:39:28,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:39:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:39:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:39:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:39:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:39:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:39:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:39:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:39:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:39:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:39:28,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:39:41,703 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:39:41,704 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:39:41,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:39:41 BoogieIcfgContainer [2020-10-13 08:39:41,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:39:41,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:39:41,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:39:41,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:39:41,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:39:25" (1/3) ... [2020-10-13 08:39:41,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef6f902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:39:41, skipping insertion in model container [2020-10-13 08:39:41,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:39:28" (2/3) ... [2020-10-13 08:39:41,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef6f902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:39:41, skipping insertion in model container [2020-10-13 08:39:41,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:39:41" (3/3) ... [2020-10-13 08:39:41,746 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label39.c [2020-10-13 08:39:41,761 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:39:41,776 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:39:41,795 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:39:41,838 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:39:41,839 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:39:41,839 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:39:41,839 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:39:41,839 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:39:41,839 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:39:41,840 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:39:41,840 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:39:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:39:41,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 08:39:41,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:39:41,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:39:41,930 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:39:41,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:39:41,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1910105920, now seen corresponding path program 1 times [2020-10-13 08:39:41,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:39:41,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861765017] [2020-10-13 08:39:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:39:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:42,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:42,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 08:39:42,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-13 08:39:42,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:39:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:39:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 08:39:42,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:39:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:39:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:42,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:43,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:43,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:39:43,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:39:43,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:39:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:39:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:39:43,050 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 08:39:43,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861765017] [2020-10-13 08:39:43,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:39:43,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:39:43,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294390808] [2020-10-13 08:39:43,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:39:43,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:39:43,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:39:43,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:39:43,092 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-13 08:40:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:02,909 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-13 08:40:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:40:02,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-13 08:40:02,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:02,986 INFO L225 Difference]: With dead ends: 4080 [2020-10-13 08:40:02,986 INFO L226 Difference]: Without dead ends: 2872 [2020-10-13 08:40:03,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:40:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-13 08:40:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-13 08:40:03,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-13 08:40:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-13 08:40:03,264 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 57 [2020-10-13 08:40:03,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:03,266 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-13 08:40:03,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:40:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-13 08:40:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 08:40:03,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:03,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:40:03,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:40:03,289 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:03,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1148002277, now seen corresponding path program 1 times [2020-10-13 08:40:03,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:03,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501876832] [2020-10-13 08:40:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:03,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:05,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:06,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:06,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:40:06,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:40:06,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3221 [2020-10-13 08:40:06,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:06,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:40:06,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:40:06,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:40:06,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:40:07,017 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 29 [2020-10-13 08:40:07,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:07,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:07,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:07,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:07,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:40:07,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:07,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:07,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:07,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:40:07,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:07,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:07,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:07,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:40:07,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 08:40:07,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:40:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:40:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:40:07,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501876832] [2020-10-13 08:40:07,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:40:07,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:40:07,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964161455] [2020-10-13 08:40:07,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:40:07,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:07,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:40:07,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:40:07,520 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 6 states. [2020-10-13 08:40:08,724 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-13 08:40:29,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:29,101 INFO L93 Difference]: Finished difference Result 3898 states and 6364 transitions. [2020-10-13 08:40:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 08:40:29,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-13 08:40:29,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:29,119 INFO L225 Difference]: With dead ends: 3898 [2020-10-13 08:40:29,120 INFO L226 Difference]: Without dead ends: 1938 [2020-10-13 08:40:29,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:40:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2020-10-13 08:40:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1934. [2020-10-13 08:40:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-13 08:40:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3161 transitions. [2020-10-13 08:40:29,184 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3161 transitions. Word has length 132 [2020-10-13 08:40:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:29,185 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3161 transitions. [2020-10-13 08:40:29,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:40:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3161 transitions. [2020-10-13 08:40:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 08:40:29,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:29,188 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:40:29,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:40:29,188 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:29,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1205008679, now seen corresponding path program 1 times [2020-10-13 08:40:29,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:29,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682957425] [2020-10-13 08:40:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:29,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:29,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:29,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:30,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:30,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:40:30,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:40:30,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-10-13 08:40:30,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:40:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:40:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:30,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:30,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:30,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:30,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:40:30,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:30,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:30,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:30,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:30,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:40:30,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:30,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:40:30,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 08:40:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:40:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:40:30,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682957425] [2020-10-13 08:40:30,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:40:30,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:40:30,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302606644] [2020-10-13 08:40:30,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:30,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:30,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:30,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:30,780 INFO L87 Difference]: Start difference. First operand 1934 states and 3161 transitions. Second operand 5 states. [2020-10-13 08:40:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:48,200 INFO L93 Difference]: Finished difference Result 5593 states and 9295 transitions. [2020-10-13 08:40:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:40:48,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-13 08:40:48,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:48,225 INFO L225 Difference]: With dead ends: 5593 [2020-10-13 08:40:48,226 INFO L226 Difference]: Without dead ends: 3665 [2020-10-13 08:40:48,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:40:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2020-10-13 08:40:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3614. [2020-10-13 08:40:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3614 states. [2020-10-13 08:40:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5688 transitions. [2020-10-13 08:40:48,347 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5688 transitions. Word has length 139 [2020-10-13 08:40:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:48,348 INFO L479 AbstractCegarLoop]: Abstraction has 3614 states and 5688 transitions. [2020-10-13 08:40:48,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:40:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5688 transitions. [2020-10-13 08:40:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 08:40:48,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:48,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:40:48,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:40:48,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:48,351 INFO L82 PathProgramCache]: Analyzing trace with hash -926588775, now seen corresponding path program 1 times [2020-10-13 08:40:48,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:48,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113138821] [2020-10-13 08:40:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:49,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:49,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 08:40:49,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:40:49,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-13 08:40:49,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:49,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:40:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:40:49,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:40:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:40:49,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:49,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:49,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:49,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:40:49,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:49,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:40:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:49,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:49,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:40:49,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 08:40:49,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:40:49,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:40:49,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113138821] [2020-10-13 08:40:49,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:40:49,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:40:49,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413473169] [2020-10-13 08:40:49,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:49,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:49,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:49,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:49,898 INFO L87 Difference]: Start difference. First operand 3614 states and 5688 transitions. Second operand 5 states. [2020-10-13 08:41:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:11,959 INFO L93 Difference]: Finished difference Result 10572 states and 16891 transitions. [2020-10-13 08:41:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:41:11,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-13 08:41:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:11,999 INFO L225 Difference]: With dead ends: 10572 [2020-10-13 08:41:11,999 INFO L226 Difference]: Without dead ends: 6964 [2020-10-13 08:41:12,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:41:12,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2020-10-13 08:41:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6952. [2020-10-13 08:41:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6952 states. [2020-10-13 08:41:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6952 states to 6952 states and 9656 transitions. [2020-10-13 08:41:12,180 INFO L78 Accepts]: Start accepts. Automaton has 6952 states and 9656 transitions. Word has length 158 [2020-10-13 08:41:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:12,182 INFO L479 AbstractCegarLoop]: Abstraction has 6952 states and 9656 transitions. [2020-10-13 08:41:12,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:41:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 6952 states and 9656 transitions. [2020-10-13 08:41:12,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 08:41:12,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:12,189 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:41:12,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:41:12,191 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:12,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1470902941, now seen corresponding path program 1 times [2020-10-13 08:41:12,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:12,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768734276] [2020-10-13 08:41:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:12,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:13,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:13,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:13,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 08:41:13,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:41:13,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1499 [2020-10-13 08:41:13,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:13,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:41:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 08:41:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:41:13,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:13,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:13,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:13,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:13,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:41:13,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:13,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:13,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:13,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:14,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:14,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:41:14,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:14,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 08:41:14,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:14,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:41:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:41:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:41:14,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768734276] [2020-10-13 08:41:14,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:41:14,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:41:14,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935399486] [2020-10-13 08:41:14,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:41:14,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:14,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:41:14,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:41:14,264 INFO L87 Difference]: Start difference. First operand 6952 states and 9656 transitions. Second operand 5 states. [2020-10-13 08:41:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:31,793 INFO L93 Difference]: Finished difference Result 13925 states and 19353 transitions. [2020-10-13 08:41:31,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:41:31,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 08:41:31,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:31,838 INFO L225 Difference]: With dead ends: 13925 [2020-10-13 08:41:31,838 INFO L226 Difference]: Without dead ends: 6956 [2020-10-13 08:41:31,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 08:41:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2020-10-13 08:41:32,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 6952. [2020-10-13 08:41:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6952 states. [2020-10-13 08:41:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6952 states to 6952 states and 9654 transitions. [2020-10-13 08:41:32,020 INFO L78 Accepts]: Start accepts. Automaton has 6952 states and 9654 transitions. Word has length 159 [2020-10-13 08:41:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:32,021 INFO L479 AbstractCegarLoop]: Abstraction has 6952 states and 9654 transitions. [2020-10-13 08:41:32,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:41:32,021 INFO L276 IsEmpty]: Start isEmpty. Operand 6952 states and 9654 transitions. [2020-10-13 08:41:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 08:41:32,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:32,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:41:32,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:41:32,025 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:32,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:32,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1155693473, now seen corresponding path program 1 times [2020-10-13 08:41:32,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:32,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614551048] [2020-10-13 08:41:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:32,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:33,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:33,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:41:33,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:41:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-10-13 08:41:33,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:41:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-13 08:41:33,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:41:33,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:33,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:33,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:33,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:33,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:33,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:33,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:41:33,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:33,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:33,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:33,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:33,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:41:33,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:33,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:41:33,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:33,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:41:33,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:41:33,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614551048] [2020-10-13 08:41:33,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:41:33,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:41:33,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915867192] [2020-10-13 08:41:33,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:41:33,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:33,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:41:33,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:41:33,498 INFO L87 Difference]: Start difference. First operand 6952 states and 9654 transitions. Second operand 5 states. [2020-10-13 08:41:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:58,868 INFO L93 Difference]: Finished difference Result 17188 states and 24882 transitions. [2020-10-13 08:41:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:41:58,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-13 08:41:58,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:58,912 INFO L225 Difference]: With dead ends: 17188 [2020-10-13 08:41:58,912 INFO L226 Difference]: Without dead ends: 10242 [2020-10-13 08:41:58,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:41:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states. [2020-10-13 08:41:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 10230. [2020-10-13 08:41:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10230 states. [2020-10-13 08:41:59,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10230 states to 10230 states and 14223 transitions. [2020-10-13 08:41:59,215 INFO L78 Accepts]: Start accepts. Automaton has 10230 states and 14223 transitions. Word has length 162 [2020-10-13 08:41:59,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:59,215 INFO L479 AbstractCegarLoop]: Abstraction has 10230 states and 14223 transitions. [2020-10-13 08:41:59,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:41:59,215 INFO L276 IsEmpty]: Start isEmpty. Operand 10230 states and 14223 transitions. [2020-10-13 08:41:59,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 08:41:59,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:59,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:41:59,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:41:59,220 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:59,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:59,221 INFO L82 PathProgramCache]: Analyzing trace with hash -724485451, now seen corresponding path program 1 times [2020-10-13 08:41:59,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:59,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281173631] [2020-10-13 08:41:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:00,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:00,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 08:42:00,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:42:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-13 08:42:00,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 08:42:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:42:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:42:00,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:00,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:00,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:00,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:42:00,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:00,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:00,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:00,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:00,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:00,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 08:42:00,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:00,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:42:00,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:42:00,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:42:00,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281173631] [2020-10-13 08:42:00,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:42:00,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:42:00,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706480174] [2020-10-13 08:42:00,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:00,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:00,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:00,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:00,565 INFO L87 Difference]: Start difference. First operand 10230 states and 14223 transitions. Second operand 5 states. [2020-10-13 08:42:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:27,166 INFO L93 Difference]: Finished difference Result 23802 states and 34160 transitions. [2020-10-13 08:42:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:42:27,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 08:42:27,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:27,215 INFO L225 Difference]: With dead ends: 23802 [2020-10-13 08:42:27,215 INFO L226 Difference]: Without dead ends: 13578 [2020-10-13 08:42:27,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:42:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13578 states. [2020-10-13 08:42:27,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13578 to 13560. [2020-10-13 08:42:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13560 states. [2020-10-13 08:42:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13560 states to 13560 states and 18268 transitions. [2020-10-13 08:42:27,560 INFO L78 Accepts]: Start accepts. Automaton has 13560 states and 18268 transitions. Word has length 172 [2020-10-13 08:42:27,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:27,561 INFO L479 AbstractCegarLoop]: Abstraction has 13560 states and 18268 transitions. [2020-10-13 08:42:27,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:42:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 13560 states and 18268 transitions. [2020-10-13 08:42:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 08:42:27,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:27,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:27,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:42:27,566 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:27,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:27,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1519005470, now seen corresponding path program 1 times [2020-10-13 08:42:27,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:27,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513540865] [2020-10-13 08:42:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:27,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:27,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:27,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:28,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:28,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 08:42:28,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:42:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1189 [2020-10-13 08:42:28,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 08:42:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:42:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:28,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:28,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:28,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:28,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:42:28,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:28,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:28,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:28,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:28,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:29,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:29,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:42:29,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:42:29,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:42:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:42:29,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513540865] [2020-10-13 08:42:29,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:42:29,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:42:29,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279269332] [2020-10-13 08:42:29,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:29,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:29,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:29,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:29,949 INFO L87 Difference]: Start difference. First operand 13560 states and 18268 transitions. Second operand 5 states. [2020-10-13 08:43:04,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:04,122 INFO L93 Difference]: Finished difference Result 40139 states and 55544 transitions. [2020-10-13 08:43:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:04,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-13 08:43:04,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:04,247 INFO L225 Difference]: With dead ends: 40139 [2020-10-13 08:43:04,247 INFO L226 Difference]: Without dead ends: 26585 [2020-10-13 08:43:04,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26585 states. [2020-10-13 08:43:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26585 to 26560. [2020-10-13 08:43:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26560 states. [2020-10-13 08:43:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26560 states to 26560 states and 34222 transitions. [2020-10-13 08:43:04,955 INFO L78 Accepts]: Start accepts. Automaton has 26560 states and 34222 transitions. Word has length 175 [2020-10-13 08:43:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:04,955 INFO L479 AbstractCegarLoop]: Abstraction has 26560 states and 34222 transitions. [2020-10-13 08:43:04,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:04,956 INFO L276 IsEmpty]: Start isEmpty. Operand 26560 states and 34222 transitions. [2020-10-13 08:43:04,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 08:43:04,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:04,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:04,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:43:04,962 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:04,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:04,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1187251624, now seen corresponding path program 1 times [2020-10-13 08:43:04,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:04,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970549013] [2020-10-13 08:43:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:05,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:05,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 08:43:05,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 08:43:05,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:05,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:43:05,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 08:43:05,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:05,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:05,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:05,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:05,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:43:05,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:05,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:05,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:05,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:05,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:05,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:43:05,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 08:43:05,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:05,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:05,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:05,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 08:43:05,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:05,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970549013] [2020-10-13 08:43:05,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:05,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:05,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499430934] [2020-10-13 08:43:05,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:05,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:05,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:05,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:05,683 INFO L87 Difference]: Start difference. First operand 26560 states and 34222 transitions. Second operand 5 states.