java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:47:36,702 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:47:36,704 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:47:36,716 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:47:36,717 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:47:36,718 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:47:36,719 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:47:36,721 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:47:36,724 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:47:36,725 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:47:36,727 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:47:36,727 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:47:36,728 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:47:36,729 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:47:36,730 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:47:36,731 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:47:36,732 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:47:36,734 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:47:36,736 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:47:36,737 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:47:36,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:47:36,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:47:36,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 02:47:36,752 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:47:36,752 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:47:36,753 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:47:36,754 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:47:36,754 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 02:47:36,771 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:47:36,771 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:47:36,772 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:47:36,772 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:47:36,772 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:47:36,773 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:47:36,773 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:47:36,773 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:47:36,773 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:47:36,773 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:47:36,773 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:47:36,774 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:47:36,774 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:47:36,775 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:47:36,775 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:47:36,775 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:47:36,775 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:47:36,775 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:47:36,776 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:47:36,776 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:47:36,776 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:47:36,776 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:47:36,776 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:47:36,777 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:47:36,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:47:36,777 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:47:36,777 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:47:36,777 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:47:36,778 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:47:36,778 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:47:36,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:47:36,778 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:47:36,778 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:47:36,778 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:47:36,826 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:47:36,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:47:36,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:47:36,849 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:47:36,849 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:47:36,850 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44_true-unreach-call.c [2018-10-27 02:47:36,915 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/900631815/3bc14ebac0df427c968ff8dc6e509a1d/FLAG66587e227 [2018-10-27 02:47:37,694 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:47:37,695 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label44_true-unreach-call.c [2018-10-27 02:47:37,733 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/900631815/3bc14ebac0df427c968ff8dc6e509a1d/FLAG66587e227 [2018-10-27 02:47:37,755 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/900631815/3bc14ebac0df427c968ff8dc6e509a1d [2018-10-27 02:47:37,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:47:37,775 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:47:37,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:47:37,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:47:37,783 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:47:37,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:47:37" (1/1) ... [2018-10-27 02:47:37,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19392d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:37, skipping insertion in model container [2018-10-27 02:47:37,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:47:37" (1/1) ... [2018-10-27 02:47:37,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:47:37,976 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:47:39,512 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:47:39,517 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:47:40,144 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:47:40,180 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:47:40,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40 WrapperNode [2018-10-27 02:47:40,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:47:40,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:47:40,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:47:40,182 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:47:40,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (1/1) ... [2018-10-27 02:47:40,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (1/1) ... [2018-10-27 02:47:40,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:47:40,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:47:40,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:47:40,726 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:47:40,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (1/1) ... [2018-10-27 02:47:40,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (1/1) ... [2018-10-27 02:47:40,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (1/1) ... [2018-10-27 02:47:40,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (1/1) ... [2018-10-27 02:47:40,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (1/1) ... [2018-10-27 02:47:40,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (1/1) ... [2018-10-27 02:47:40,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (1/1) ... [2018-10-27 02:47:41,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:47:41,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:47:41,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:47:41,013 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:47:41,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 02:47:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:47:41,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:47:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 02:47:41,087 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 02:47:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 02:47:41,087 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 02:47:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 02:47:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 02:47:41,088 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:47:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:47:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:47:41,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:47:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:47:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:47:52,817 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:47:52,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:47:52 BoogieIcfgContainer [2018-10-27 02:47:52,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:47:52,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:47:52,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:47:52,823 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:47:52,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:47:37" (1/3) ... [2018-10-27 02:47:52,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2575d38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:47:52, skipping insertion in model container [2018-10-27 02:47:52,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:47:40" (2/3) ... [2018-10-27 02:47:52,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2575d38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:47:52, skipping insertion in model container [2018-10-27 02:47:52,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:47:52" (3/3) ... [2018-10-27 02:47:52,827 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label44_true-unreach-call.c [2018-10-27 02:47:52,838 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:47:52,848 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:47:52,866 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:47:52,911 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:47:52,911 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:47:52,911 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:47:52,911 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:47:52,911 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:47:52,911 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:47:52,912 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:47:52,912 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:47:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 02:47:52,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-27 02:47:52,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:47:52,971 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:47:52,975 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:47:52,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:47:52,983 INFO L82 PathProgramCache]: Analyzing trace with hash -567978269, now seen corresponding path program 1 times [2018-10-27 02:47:52,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:47:53,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:47:53,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:47:53,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:47:53,044 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:47:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:47:53,507 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:47:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:47:53,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:47:53,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 02:47:53,619 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:47:53,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 02:47:53,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 02:47:53,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:47:53,644 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 02:48:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:48:01,547 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 02:48:01,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 02:48:01,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-10-27 02:48:01,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:48:01,589 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 02:48:01,589 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 02:48:01,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:48:01,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 02:48:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 02:48:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 02:48:01,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-10-27 02:48:01,760 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 57 [2018-10-27 02:48:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:48:01,761 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-10-27 02:48:01,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 02:48:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-10-27 02:48:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-27 02:48:01,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:48:01,770 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:48:01,770 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:48:01,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:48:01,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1852276032, now seen corresponding path program 1 times [2018-10-27 02:48:01,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:48:01,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:48:01,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:48:01,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:48:01,773 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:48:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:48:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 43 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:48:02,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:48:02,348 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:48:02,350 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 134 with the following transitions: [2018-10-27 02:48:02,353 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2223], [2225], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 02:48:02,457 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:48:02,458 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:48:07,450 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:48:07,452 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 02:48:07,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:48:07,497 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:48:10,186 INFO L227 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 80.77% of their original sizes. [2018-10-27 02:48:10,186 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:49:00,348 INFO L415 sIntCurrentIteration]: We unified 132 AI predicates to 132 [2018-10-27 02:49:00,349 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:49:00,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:49:00,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-10-27 02:49:00,350 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:49:00,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 02:49:00,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 02:49:00,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-10-27 02:49:00,353 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 16 states. [2018-10-27 02:49:34,300 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 02:51:36,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-27 02:51:36,356 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:51:36,360 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:51:36,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:51:36 BoogieIcfgContainer [2018-10-27 02:51:36,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:51:36,362 INFO L168 Benchmark]: Toolchain (without parser) took 238587.99 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -91.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-27 02:51:36,363 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 02:51:36,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2404.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-27 02:51:36,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 543.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 786.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-27 02:51:36,365 INFO L168 Benchmark]: Boogie Preprocessor took 286.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2018-10-27 02:51:36,366 INFO L168 Benchmark]: RCFGBuilder took 11805.84 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 199.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -214.9 MB). Peak memory consumption was 689.3 MB. Max. memory is 7.1 GB. [2018-10-27 02:51:36,367 INFO L168 Benchmark]: TraceAbstraction took 223541.97 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 1.5 GB in the end (delta: 908.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-27 02:51:36,373 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2404.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 543.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 786.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11805.84 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 199.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -214.9 MB). Peak memory consumption was 689.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223541.97 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 1.5 GB in the end (delta: 908.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was constructing difference of abstraction (1604states) and FLOYD_HOARE automaton (currently 17 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1239 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 223.4s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 163.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 434 SDtfs, 3543 SDslu, 138 SDs, 0 SdLazy, 3824 SolverSat, 1188 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 145 GetRequests, 77 SyntacticMatches, 45 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 54.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1604occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9932517482517483 AbsIntWeakeningRatio, 0.1590909090909091 AbsIntAvgWeakeningVarsNumRemoved, 583.2878787878788 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 116356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 43/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown