/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/array-crafted/bor5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:30:03,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:30:03,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:30:03,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:30:03,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:30:03,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:30:03,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:30:03,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:30:03,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:30:03,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:30:03,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:30:03,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:30:03,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:30:03,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:30:03,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:30:03,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:30:03,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:30:03,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:30:03,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:30:03,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:30:03,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:30:03,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:30:03,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:30:03,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:30:03,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:30:03,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:30:03,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:30:03,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:30:03,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:30:03,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:30:03,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:30:03,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:30:03,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:30:03,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:30:03,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:30:03,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:30:03,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:30:03,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:30:03,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:30:03,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:30:03,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:30:03,668 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 04:30:03,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:30:03,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:30:03,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:30:03,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:30:03,711 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:30:03,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:30:03,712 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:30:03,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:30:03,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:30:03,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:30:03,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:30:03,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:30:03,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:30:03,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:30:03,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:30:03,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:30:03,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:30:03,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:30:03,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:30:03,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:30:03,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:30:03,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:30:03,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:30:03,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:30:03,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:30:03,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:30:03,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:30:03,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:30:03,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:30:03,717 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 04:30:04,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:30:04,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:30:04,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:30:04,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:30:04,108 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:30:04,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor5.i [2020-10-13 04:30:04,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f741440fd/568c7a9b68be47608e2526c0c10d5e30/FLAGc18dd5f89 [2020-10-13 04:30:04,621 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:30:04,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor5.i [2020-10-13 04:30:04,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f741440fd/568c7a9b68be47608e2526c0c10d5e30/FLAGc18dd5f89 [2020-10-13 04:30:04,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f741440fd/568c7a9b68be47608e2526c0c10d5e30 [2020-10-13 04:30:04,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:30:04,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:30:04,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:04,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:30:04,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:30:04,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:04,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322014a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:04, skipping insertion in model container [2020-10-13 04:30:04,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:04" (1/1) ... [2020-10-13 04:30:04,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:30:05,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:30:05,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:05,213 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:30:05,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:05,250 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:30:05,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05 WrapperNode [2020-10-13 04:30:05,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:05,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:30:05,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:30:05,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:30:05,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (1/1) ... [2020-10-13 04:30:05,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:30:05,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:30:05,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:30:05,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:30:05,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (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 04:30:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:30:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:30:05,451 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-13 04:30:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:30:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:30:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:30:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-13 04:30:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:30:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:30:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:30:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:30:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:30:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:30:05,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:30:05,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:30:05,735 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 04:30:05,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:05 BoogieIcfgContainer [2020-10-13 04:30:05,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:30:05,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:30:05,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:30:05,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:30:05,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:30:04" (1/3) ... [2020-10-13 04:30:05,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a15d0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:05, skipping insertion in model container [2020-10-13 04:30:05,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:05" (2/3) ... [2020-10-13 04:30:05,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a15d0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:05, skipping insertion in model container [2020-10-13 04:30:05,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:05" (3/3) ... [2020-10-13 04:30:05,751 INFO L109 eAbstractionObserver]: Analyzing ICFG bor5.i [2020-10-13 04:30:05,764 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:30:05,772 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:30:05,790 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:30:05,820 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:30:05,820 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:30:05,820 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:30:05,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:30:05,821 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:30:05,821 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:30:05,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:30:05,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:30:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-13 04:30:05,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 04:30:05,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:05,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:05,857 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1089041636, now seen corresponding path program 1 times [2020-10-13 04:30:05,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:05,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527713413] [2020-10-13 04:30:05,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:06,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 04:30:07,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:07,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-13 04:30:07,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:30:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 04:30:07,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:07,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:30:07,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:07,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 04:30:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:07,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 04:30:07,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 04:30:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:30:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:07,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:07,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:30:07,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:30:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:07,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:07,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:07,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:30:07,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:07,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527713413] [2020-10-13 04:30:07,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:07,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:30:07,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999365564] [2020-10-13 04:30:07,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:30:07,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:07,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:30:07,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:30:07,232 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-13 04:30:07,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:07,339 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2020-10-13 04:30:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:30:07,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-13 04:30:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:07,351 INFO L225 Difference]: With dead ends: 57 [2020-10-13 04:30:07,351 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 04:30:07,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:30:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 04:30:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 04:30:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 04:30:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 04:30:07,402 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2020-10-13 04:30:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:07,403 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 04:30:07,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:30:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 04:30:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 04:30:07,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:07,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:07,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:30:07,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:07,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1200270940, now seen corresponding path program 1 times [2020-10-13 04:30:07,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:07,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438049541] [2020-10-13 04:30:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:07,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:07,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:08,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 04:30:08,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:08,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 975 [2020-10-13 04:30:08,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:08,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:08,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 04:30:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:08,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:08,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:08,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:08,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:08,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 04:30:08,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:08,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:08,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:08,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:08,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:08,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 04:30:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:08,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:08,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:08,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:30:08,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:08,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:08,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:08,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:08,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:08,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:30:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:08,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:08,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:08,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:08,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:30:08,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:08,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:08,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:30:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:08,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:08,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:08,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:30:08,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:08,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:08,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:08,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438049541] [2020-10-13 04:30:08,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:08,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:08,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049017736] [2020-10-13 04:30:08,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:08,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:08,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:08,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:08,507 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 04:30:08,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:08,642 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-10-13 04:30:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:08,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-13 04:30:08,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:08,644 INFO L225 Difference]: With dead ends: 47 [2020-10-13 04:30:08,644 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 04:30:08,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:08,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 04:30:08,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 04:30:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 04:30:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 04:30:08,664 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2020-10-13 04:30:08,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:08,665 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 04:30:08,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 04:30:08,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 04:30:08,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:08,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:30:08,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:30:08,669 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:08,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:08,669 INFO L82 PathProgramCache]: Analyzing trace with hash 592534566, now seen corresponding path program 1 times [2020-10-13 04:30:08,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:08,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718227799] [2020-10-13 04:30:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 04:30:10,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-10-13 04:30:10,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 04:30:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:10,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:10,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:10,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 04:30:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:10,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:10,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:30:10,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:30:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:10,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:30:10,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:10,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:30:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:10,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:10,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 04:30:10,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:10,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:10,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718227799] [2020-10-13 04:30:10,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:10,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:10,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636452876] [2020-10-13 04:30:10,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:10,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:10,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:10,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:10,330 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-13 04:30:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:10,498 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-13 04:30:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:10,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-13 04:30:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:10,501 INFO L225 Difference]: With dead ends: 48 [2020-10-13 04:30:10,503 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 04:30:10,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 04:30:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-13 04:30:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 04:30:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-13 04:30:10,523 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 35 [2020-10-13 04:30:10,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:10,524 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-13 04:30:10,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:10,524 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-13 04:30:10,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 04:30:10,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:10,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:10,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:30:10,531 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:10,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:10,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1196740136, now seen corresponding path program 2 times [2020-10-13 04:30:10,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:10,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334337741] [2020-10-13 04:30:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:11,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:11,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 04:30:11,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:30:11,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-10-13 04:30:11,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 04:30:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 04:30:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:11,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:11,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:11,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:11,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:11,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:30:11,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:11,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:11,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:30:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:11,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:11,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:11,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:11,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:30:11,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:11,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:30:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:11,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:11,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:11,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:11,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:30:11,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:11,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:30:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:11,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:11,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:11,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:11,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:30:11,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 04:30:11,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334337741] [2020-10-13 04:30:11,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:11,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:11,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810065647] [2020-10-13 04:30:11,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:11,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:11,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:11,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:11,869 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-10-13 04:30:12,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:12,023 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-13 04:30:12,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:30:12,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-13 04:30:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:12,025 INFO L225 Difference]: With dead ends: 49 [2020-10-13 04:30:12,025 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 04:30:12,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:30:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 04:30:12,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 04:30:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 04:30:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 04:30:12,033 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2020-10-13 04:30:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:12,034 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 04:30:12,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 04:30:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 04:30:12,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:12,035 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:12,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:30:12,036 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:12,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:12,036 INFO L82 PathProgramCache]: Analyzing trace with hash 476203942, now seen corresponding path program 1 times [2020-10-13 04:30:12,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:12,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347394006] [2020-10-13 04:30:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:12,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 04:30:12,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:30:12,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-13 04:30:12,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 04:30:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:12,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:12,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:12,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:12,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:12,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:12,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:30:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:13,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:13,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:30:13,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:13,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:13,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:30:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:13,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:13,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:13,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:30:13,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:13,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:30:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:13,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:13,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:13,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:13,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:13,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:30:13,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 04:30:13,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347394006] [2020-10-13 04:30:13,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:13,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:30:13,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253827569] [2020-10-13 04:30:13,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:30:13,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:13,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:30:13,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:13,071 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-13 04:30:13,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:13,301 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-13 04:30:13,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:30:13,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-10-13 04:30:13,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:13,303 INFO L225 Difference]: With dead ends: 46 [2020-10-13 04:30:13,304 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 04:30:13,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:30:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 04:30:13,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-13 04:30:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 04:30:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-13 04:30:13,311 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2020-10-13 04:30:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:13,313 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-13 04:30:13,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:30:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-13 04:30:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 04:30:13,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:13,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:13,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:30:13,316 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:13,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:13,316 INFO L82 PathProgramCache]: Analyzing trace with hash -106794812, now seen corresponding path program 1 times [2020-10-13 04:30:13,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:13,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938425386] [2020-10-13 04:30:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 04:30:13,342 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 04:30:13,343 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 04:30:13,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:30:13,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:30:13 BoogieIcfgContainer [2020-10-13 04:30:13,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 04:30:13,380 INFO L168 Benchmark]: Toolchain (without parser) took 8406.86 ms. Allocated memory was 139.5 MB in the beginning and 313.5 MB in the end (delta: 174.1 MB). Free memory was 102.7 MB in the beginning and 141.3 MB in the end (delta: -38.6 MB). Peak memory consumption was 135.5 MB. Max. memory is 7.1 GB. [2020-10-13 04:30:13,381 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-13 04:30:13,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.24 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 91.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-10-13 04:30:13,383 INFO L168 Benchmark]: Boogie Preprocessor took 124.72 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.7 MB in the beginning and 179.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-10-13 04:30:13,384 INFO L168 Benchmark]: RCFGBuilder took 363.48 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 162.0 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-10-13 04:30:13,384 INFO L168 Benchmark]: TraceAbstraction took 7634.49 ms. Allocated memory was 202.4 MB in the beginning and 313.5 MB in the end (delta: 111.1 MB). Free memory was 162.0 MB in the beginning and 141.3 MB in the end (delta: 20.7 MB). Peak memory consumption was 131.9 MB. Max. memory is 7.1 GB. [2020-10-13 04:30:13,388 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.24 ms. Allocated memory is still 139.5 MB. Free memory was 102.7 MB in the beginning and 91.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.72 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.7 MB in the beginning and 179.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 363.48 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 162.0 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7634.49 ms. Allocated memory was 202.4 MB in the beginning and 313.5 MB in the end (delta: 111.1 MB). Free memory was 162.0 MB in the beginning and 141.3 MB in the end (delta: 20.7 MB). Peak memory consumption was 131.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 14. Possible FailurePath: [L6] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND TRUE N > 1 [L23] int x[N]; [L24] int temp; [L25] int ret; [L26] int ret2; [L27] int ret5; [L29] int i = 0; [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ [L29] COND FALSE !(i < N) [L34] CALL, EXPR bor(x) [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res | x[i] [L13] i++ [L13] COND FALSE !(i < N) [L16] return res; [L34] RET, EXPR bor(x) [L34] ret = bor(x) [L36] EXPR x[0] [L36] temp=x[0] [L36] EXPR x[1] [L36] x[0] = x[1] [L36] x[1] = temp [L37] CALL, EXPR bor(x) [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res | x[i] [L13] i++ [L13] COND FALSE !(i < N) [L16] return res; [L37] RET, EXPR bor(x) [L37] ret2 = bor(x) [L38] EXPR x[0] [L38] temp=x[0] [L39] int i =0 ; [L39] COND TRUE i