/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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:34:20,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:34:20,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:34:20,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:34:20,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:34:20,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:34:20,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:34:20,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:34:20,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:34:20,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:34:20,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:34:20,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:34:20,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:34:20,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:34:20,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:34:20,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:34:20,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:34:20,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:34:20,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:34:20,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:34:20,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:34:20,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:34:20,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:34:20,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:34:20,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:34:20,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:34:20,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:34:20,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:34:20,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:34:20,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:34:20,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:34:20,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:34:20,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:34:20,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:34:20,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:34:20,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:34:20,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:34:20,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:34:20,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:34:20,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:34:20,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:34:20,360 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 08:34:20,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:34:20,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:34:20,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:34:20,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:34:20,386 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:34:20,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:34:20,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:34:20,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:34:20,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:34:20,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:34:20,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:34:20,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:34:20,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:34:20,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:34:20,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:34:20,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:34:20,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:34:20,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:34:20,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:34:20,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:34:20,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:34:20,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:34:20,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:34:20,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:34:20,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:34:20,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:34:20,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:34:20,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:34:20,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:34:20,391 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 08:34:20,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:34:20,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:34:20,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:34:20,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:34:20,732 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:34:20,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21.c [2020-10-13 08:34:20,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a402b4211/5719404b1d5f4a6ca59dd4ba0da47267/FLAGe644f8abd [2020-10-13 08:34:21,685 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:34:21,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label21.c [2020-10-13 08:34:21,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a402b4211/5719404b1d5f4a6ca59dd4ba0da47267/FLAGe644f8abd [2020-10-13 08:34:22,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a402b4211/5719404b1d5f4a6ca59dd4ba0da47267 [2020-10-13 08:34:22,192 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:34:22,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:34:22,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:34:22,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:34:22,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:34:22,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:34:22" (1/1) ... [2020-10-13 08:34:22,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41357594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:22, skipping insertion in model container [2020-10-13 08:34:22,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:34:22" (1/1) ... [2020-10-13 08:34:22,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:34:22,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:34:24,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:34:24,155 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:34:25,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:34:25,257 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:34:25,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:25 WrapperNode [2020-10-13 08:34:25,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:34:25,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:34:25,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:34:25,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:34:25,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:25" (1/1) ... [2020-10-13 08:34:25,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:25" (1/1) ... [2020-10-13 08:34:25,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:25" (1/1) ... [2020-10-13 08:34:25,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:25" (1/1) ... [2020-10-13 08:34:25,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:25" (1/1) ... [2020-10-13 08:34:25,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:25" (1/1) ... [2020-10-13 08:34:25,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:25" (1/1) ... [2020-10-13 08:34:25,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:34:25,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:34:25,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:34:25,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:34:25,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:25" (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 08:34:25,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:34:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:34:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:34:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:34:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:34:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:34:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:34:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:34:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:34:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:34:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:34:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:34:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:34:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:34:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:34:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:34:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:34:39,479 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:34:39,480 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:34:39,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:34:39 BoogieIcfgContainer [2020-10-13 08:34:39,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:34:39,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:34:39,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:34:39,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:34:39,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:34:22" (1/3) ... [2020-10-13 08:34:39,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c37787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:34:39, skipping insertion in model container [2020-10-13 08:34:39,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:34:25" (2/3) ... [2020-10-13 08:34:39,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c37787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:34:39, skipping insertion in model container [2020-10-13 08:34:39,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:34:39" (3/3) ... [2020-10-13 08:34:39,505 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label21.c [2020-10-13 08:34:39,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:34:39,528 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:34:39,543 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:34:39,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:34:39,576 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:34:39,576 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:34:39,576 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:34:39,576 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:34:39,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:34:39,576 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:34:39,577 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:34:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:34:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 08:34:39,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:39,626 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] [2020-10-13 08:34:39,627 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1283196489, now seen corresponding path program 1 times [2020-10-13 08:34:39,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:39,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643981049] [2020-10-13 08:34:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:40,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:40,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 08:34:40,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-13 08:34:40,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:34:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:34:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:34:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:34:40,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:40,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:40,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:40,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:40,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:34:40,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:34:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:40,330 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 08:34:40,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643981049] [2020-10-13 08:34:40,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:34:40,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:34:40,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204533] [2020-10-13 08:34:40,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:34:40,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:40,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:34:40,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:34:40,359 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:34:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:54,988 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-13 08:34:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:54,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-13 08:34:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:55,032 INFO L225 Difference]: With dead ends: 3152 [2020-10-13 08:34:55,033 INFO L226 Difference]: Without dead ends: 1954 [2020-10-13 08:34:55,048 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 08:34:55,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-13 08:34:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-13 08:34:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-13 08:34:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-13 08:34:55,265 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 26 [2020-10-13 08:34:55,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:55,268 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-13 08:34:55,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:34:55,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-13 08:34:55,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 08:34:55,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:55,278 INFO L422 BasicCegarLoop]: trace histogram [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 08:34:55,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:34:55,279 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:55,280 INFO L82 PathProgramCache]: Analyzing trace with hash -568040722, now seen corresponding path program 1 times [2020-10-13 08:34:55,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:55,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43039955] [2020-10-13 08:34:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:55,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:56,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:56,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:34:56,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:34:56,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-13 08:34:56,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:34:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:34:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:34:56,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:56,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:56,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:56,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:56,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:34:56,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:56,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:56,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:56,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:34:56,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:56,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:56,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:56,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:34:56,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:56,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 08:34:56,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:34:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 08:34:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:34:56,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43039955] [2020-10-13 08:34:56,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:56,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:34:56,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954497051] [2020-10-13 08:34:56,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:34:56,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:56,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:34:56,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:34:56,959 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 5 states. [2020-10-13 08:35:14,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:14,834 INFO L93 Difference]: Finished difference Result 5468 states and 9074 transitions. [2020-10-13 08:35:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:14,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 08:35:14,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:14,860 INFO L225 Difference]: With dead ends: 5468 [2020-10-13 08:35:14,860 INFO L226 Difference]: Without dead ends: 3589 [2020-10-13 08:35:14,869 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 08:35:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-10-13 08:35:14,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 3564. [2020-10-13 08:35:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3564 states. [2020-10-13 08:35:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 5092 transitions. [2020-10-13 08:35:14,987 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 5092 transitions. Word has length 96 [2020-10-13 08:35:14,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:14,988 INFO L479 AbstractCegarLoop]: Abstraction has 3564 states and 5092 transitions. [2020-10-13 08:35:14,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:35:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 5092 transitions. [2020-10-13 08:35:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 08:35:14,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:14,993 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:35:14,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:35:14,993 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:14,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:14,994 INFO L82 PathProgramCache]: Analyzing trace with hash 203440535, now seen corresponding path program 1 times [2020-10-13 08:35:14,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:14,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343866200] [2020-10-13 08:35:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:15,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:15,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:15,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 08:35:15,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:35:15,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-13 08:35:15,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:35:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:35:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:35:16,154 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-13 08:35:16,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:16,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:16,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:16,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:35:16,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:16,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:16,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:16,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:16,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:35:16,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:35:16,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:35:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:16,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343866200] [2020-10-13 08:35:16,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:16,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:35:16,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491274078] [2020-10-13 08:35:16,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:35:16,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:16,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:35:16,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:35:16,370 INFO L87 Difference]: Start difference. First operand 3564 states and 5092 transitions. Second operand 6 states. [2020-10-13 08:35:38,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:38,678 INFO L93 Difference]: Finished difference Result 9595 states and 14087 transitions. [2020-10-13 08:35:38,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:38,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-13 08:35:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:38,721 INFO L225 Difference]: With dead ends: 9595 [2020-10-13 08:35:38,721 INFO L226 Difference]: Without dead ends: 6037 [2020-10-13 08:35:38,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:35:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6037 states. [2020-10-13 08:35:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6037 to 6028. [2020-10-13 08:35:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6028 states. [2020-10-13 08:35:38,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 8491 transitions. [2020-10-13 08:35:38,917 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 8491 transitions. Word has length 99 [2020-10-13 08:35:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:38,919 INFO L479 AbstractCegarLoop]: Abstraction has 6028 states and 8491 transitions. [2020-10-13 08:35:38,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:35:38,919 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 8491 transitions. [2020-10-13 08:35:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 08:35:38,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:38,931 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:35:38,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:35:38,932 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:38,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1172180461, now seen corresponding path program 1 times [2020-10-13 08:35:38,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:38,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171009449] [2020-10-13 08:35:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:39,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:39,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:39,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:35:39,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:35:39,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-13 08:35:39,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:35:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:35:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:39,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:39,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:39,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:39,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:35:39,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:39,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:39,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:40,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:40,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:35:40,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:40,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:35:40,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:35:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:40,062 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:40,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171009449] [2020-10-13 08:35:40,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:40,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:40,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054456502] [2020-10-13 08:35:40,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:40,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:40,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:40,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:40,068 INFO L87 Difference]: Start difference. First operand 6028 states and 8491 transitions. Second operand 5 states. [2020-10-13 08:36:02,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:02,944 INFO L93 Difference]: Finished difference Result 15323 states and 22346 transitions. [2020-10-13 08:36:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:02,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 08:36:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:02,999 INFO L225 Difference]: With dead ends: 15323 [2020-10-13 08:36:03,000 INFO L226 Difference]: Without dead ends: 9301 [2020-10-13 08:36:03,018 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 08:36:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9301 states. [2020-10-13 08:36:03,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 9281. [2020-10-13 08:36:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9281 states. [2020-10-13 08:36:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9281 states to 9281 states and 13465 transitions. [2020-10-13 08:36:03,304 INFO L78 Accepts]: Start accepts. Automaton has 9281 states and 13465 transitions. Word has length 101 [2020-10-13 08:36:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:03,307 INFO L479 AbstractCegarLoop]: Abstraction has 9281 states and 13465 transitions. [2020-10-13 08:36:03,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 9281 states and 13465 transitions. [2020-10-13 08:36:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 08:36:03,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:03,317 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:36:03,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:36:03,317 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:03,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:03,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1197957899, now seen corresponding path program 1 times [2020-10-13 08:36:03,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:03,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834482406] [2020-10-13 08:36:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:03,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:04,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:04,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:36:04,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:36:04,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-13 08:36:04,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:36:04,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:36:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:04,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:04,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:04,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:04,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:36:04,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:04,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:04,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:04,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:36:04,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 08:36:04,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:36:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:36:04,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834482406] [2020-10-13 08:36:04,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:04,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:36:04,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141303763] [2020-10-13 08:36:04,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:36:04,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:04,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:36:04,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:36:04,453 INFO L87 Difference]: Start difference. First operand 9281 states and 13465 transitions. Second operand 5 states. [2020-10-13 08:36:34,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:34,405 INFO L93 Difference]: Finished difference Result 19433 states and 29484 transitions. [2020-10-13 08:36:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:34,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 08:36:34,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:34,468 INFO L225 Difference]: With dead ends: 19433 [2020-10-13 08:36:34,469 INFO L226 Difference]: Without dead ends: 14218 [2020-10-13 08:36:34,487 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 08:36:34,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14218 states. [2020-10-13 08:36:34,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14218 to 14155. [2020-10-13 08:36:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14155 states. [2020-10-13 08:36:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14155 states to 14155 states and 19962 transitions. [2020-10-13 08:36:34,850 INFO L78 Accepts]: Start accepts. Automaton has 14155 states and 19962 transitions. Word has length 105 [2020-10-13 08:36:34,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:34,851 INFO L479 AbstractCegarLoop]: Abstraction has 14155 states and 19962 transitions. [2020-10-13 08:36:34,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:34,852 INFO L276 IsEmpty]: Start isEmpty. Operand 14155 states and 19962 transitions. [2020-10-13 08:36:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 08:36:34,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:34,855 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:36:34,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:36:34,855 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:34,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1618521953, now seen corresponding path program 1 times [2020-10-13 08:36:34,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:34,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201477078] [2020-10-13 08:36:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:35,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:35,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:35,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:36:35,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:36:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-10-13 08:36:35,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:36:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:36:35,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:35,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:35,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:35,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:35,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:36:35,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:36,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:36,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:36:36,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:36,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:36:36,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:36:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:36:36,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201477078] [2020-10-13 08:36:36,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:36,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:36:36,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495396953] [2020-10-13 08:36:36,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:36:36,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:36,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:36:36,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:36:36,258 INFO L87 Difference]: Start difference. First operand 14155 states and 19962 transitions. Second operand 5 states. [2020-10-13 08:37:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:02,861 INFO L93 Difference]: Finished difference Result 29202 states and 42854 transitions. [2020-10-13 08:37:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:02,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 08:37:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:02,944 INFO L225 Difference]: With dead ends: 29202 [2020-10-13 08:37:02,944 INFO L226 Difference]: Without dead ends: 19109 [2020-10-13 08:37:02,969 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 08:37:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19109 states. [2020-10-13 08:37:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19109 to 19055. [2020-10-13 08:37:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19055 states. [2020-10-13 08:37:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19055 states to 19055 states and 26773 transitions. [2020-10-13 08:37:03,385 INFO L78 Accepts]: Start accepts. Automaton has 19055 states and 26773 transitions. Word has length 127 [2020-10-13 08:37:03,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:03,385 INFO L479 AbstractCegarLoop]: Abstraction has 19055 states and 26773 transitions. [2020-10-13 08:37:03,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:37:03,386 INFO L276 IsEmpty]: Start isEmpty. Operand 19055 states and 26773 transitions. [2020-10-13 08:37:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 08:37:03,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:03,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:37:03,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:37:03,390 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:03,391 INFO L82 PathProgramCache]: Analyzing trace with hash 738668522, now seen corresponding path program 1 times [2020-10-13 08:37:03,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:03,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655359682] [2020-10-13 08:37:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:04,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:06,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:06,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:37:06,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:37:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2681 [2020-10-13 08:37:06,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:37:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:37:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:06,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:06,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:06,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:06,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:06,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:06,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:37:06,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:06,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:06,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:06,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:06,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:37:06,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:06,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:37:06,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:06,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:06,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:06,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:06,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:06,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 08:37:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:06,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:06,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:37:06,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:06,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 08:37:06,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:37:06,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 08:37:06,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655359682] [2020-10-13 08:37:06,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:06,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:06,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592151985] [2020-10-13 08:37:06,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:06,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:06,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:06,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:06,408 INFO L87 Difference]: Start difference. First operand 19055 states and 26773 transitions. Second operand 5 states. [2020-10-13 08:37:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:36,830 INFO L93 Difference]: Finished difference Result 48683 states and 70239 transitions. [2020-10-13 08:37:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:36,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-13 08:37:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:36,965 INFO L225 Difference]: With dead ends: 48683 [2020-10-13 08:37:36,965 INFO L226 Difference]: Without dead ends: 30437 [2020-10-13 08:37:37,024 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 08:37:37,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30437 states. [2020-10-13 08:37:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30437 to 30423. [2020-10-13 08:37:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30423 states. [2020-10-13 08:37:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 41729 transitions. [2020-10-13 08:37:37,670 INFO L78 Accepts]: Start accepts. Automaton has 30423 states and 41729 transitions. Word has length 171 [2020-10-13 08:37:37,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:37,671 INFO L479 AbstractCegarLoop]: Abstraction has 30423 states and 41729 transitions. [2020-10-13 08:37:37,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:37:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 30423 states and 41729 transitions. [2020-10-13 08:37:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 08:37:37,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:37,677 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:37:37,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:37:37,677 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:37,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:37,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1022368901, now seen corresponding path program 1 times [2020-10-13 08:37:37,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:37,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359705679] [2020-10-13 08:37:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:37,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:40,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:40,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 08:37:40,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:37:40,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2304 [2020-10-13 08:37:40,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-13 08:37:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:37:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:40,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:40,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:40,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:40,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:40,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:37:40,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:40,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:40,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:40,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:40,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:40,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:40,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:40,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 08:37:40,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:40,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 08:37:40,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-13 08:37:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:37:40,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359705679] [2020-10-13 08:37:40,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:40,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:40,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966789742] [2020-10-13 08:37:40,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:40,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:40,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:40,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:40,517 INFO L87 Difference]: Start difference. First operand 30423 states and 41729 transitions. Second operand 5 states. [2020-10-13 08:38:08,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:08,036 INFO L93 Difference]: Finished difference Result 84361 states and 120588 transitions. [2020-10-13 08:38:08,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:08,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 08:38:08,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:08,327 INFO L225 Difference]: With dead ends: 84361 [2020-10-13 08:38:08,328 INFO L226 Difference]: Without dead ends: 54747 [2020-10-13 08:38:08,402 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 08:38:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54747 states. [2020-10-13 08:38:09,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54747 to 54740. [2020-10-13 08:38:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54740 states. [2020-10-13 08:38:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54740 states to 54740 states and 74075 transitions. [2020-10-13 08:38:09,846 INFO L78 Accepts]: Start accepts. Automaton has 54740 states and 74075 transitions. Word has length 172 [2020-10-13 08:38:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:09,847 INFO L479 AbstractCegarLoop]: Abstraction has 54740 states and 74075 transitions. [2020-10-13 08:38:09,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:38:09,847 INFO L276 IsEmpty]: Start isEmpty. Operand 54740 states and 74075 transitions. [2020-10-13 08:38:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-13 08:38:09,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:09,867 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:38:09,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:38:09,867 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:09,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:09,868 INFO L82 PathProgramCache]: Analyzing trace with hash 712429584, now seen corresponding path program 1 times [2020-10-13 08:38:09,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:09,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070859152] [2020-10-13 08:38:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:10,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:10,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:10,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-13 08:38:10,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:10,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-13 08:38:10,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:10,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:38:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:38:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-13 08:38:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:38:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:10,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:10,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:10,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:10,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:38:10,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:38:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:10,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:11,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:11,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:38:11,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-13 08:38:11,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:38:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 08:38:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:38:11,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070859152] [2020-10-13 08:38:11,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:38:11,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:38:11,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621379989] [2020-10-13 08:38:11,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:38:11,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:11,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:38:11,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:38:11,374 INFO L87 Difference]: Start difference. First operand 54740 states and 74075 transitions. Second operand 7 states.