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/Problem13_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:35:49,514 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:35:49,517 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:35:49,532 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:35:49,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:35:49,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:35:49,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:35:49,537 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:35:49,538 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:35:49,539 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:35:49,540 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:35:49,540 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:35:49,541 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:35:49,542 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:35:49,543 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:35:49,544 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:35:49,545 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:35:49,547 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:35:49,551 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:35:49,553 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:35:49,554 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:35:49,561 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:35:49,566 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:35:49,576 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:35:49,576 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:35:49,577 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:35:49,578 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:35:49,578 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 [2018-10-24 21:35:49,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:35:49,613 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:35:49,613 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:35:49,614 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:35:49,614 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:35:49,614 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:35:49,614 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:35:49,614 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:35:49,615 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:35:49,616 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:35:49,616 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:35:49,616 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:35:49,617 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:35:49,617 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:35:49,617 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:35:49,617 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:35:49,617 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:35:49,618 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:35:49,618 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:35:49,618 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:35:49,618 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:35:49,618 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:35:49,620 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:35:49,621 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:35:49,621 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:35:49,621 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:35:49,621 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:35:49,622 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:35:49,622 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:35:49,622 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:35:49,622 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:35:49,623 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:35:49,623 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:35:49,623 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:35:49,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:35:49,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:35:49,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:35:49,709 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:35:49,709 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:35:49,710 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c [2018-10-24 21:35:49,776 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/47f812a2d/83255255ff544ed5bf2aed195ae05d84/FLAGd657d9d06 [2018-10-24 21:35:50,578 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:35:50,579 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c [2018-10-24 21:35:50,609 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/47f812a2d/83255255ff544ed5bf2aed195ae05d84/FLAGd657d9d06 [2018-10-24 21:35:50,626 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/47f812a2d/83255255ff544ed5bf2aed195ae05d84 [2018-10-24 21:35:50,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:35:50,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:35:50,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:35:50,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:35:50,645 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:35:50,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:35:50" (1/1) ... [2018-10-24 21:35:50,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bb8d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:50, skipping insertion in model container [2018-10-24 21:35:50,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:35:50" (1/1) ... [2018-10-24 21:35:50,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:35:50,847 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:35:52,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:35:52,291 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:35:53,101 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:35:53,141 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:35:53,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53 WrapperNode [2018-10-24 21:35:53,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:35:53,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:35:53,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:35:53,143 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:35:53,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (1/1) ... [2018-10-24 21:35:53,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (1/1) ... [2018-10-24 21:35:53,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:35:53,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:35:53,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:35:53,722 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:35:53,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (1/1) ... [2018-10-24 21:35:53,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (1/1) ... [2018-10-24 21:35:53,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (1/1) ... [2018-10-24 21:35:53,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (1/1) ... [2018-10-24 21:35:53,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (1/1) ... [2018-10-24 21:35:53,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (1/1) ... [2018-10-24 21:35:54,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (1/1) ... [2018-10-24 21:35:54,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:35:54,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:35:54,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:35:54,085 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:35:54,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (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 [2018-10-24 21:35:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:35:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:35:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:35:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:35:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:35:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:35:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:35:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:35:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:35:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:35:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:35:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:35:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:35:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:36:05,813 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:36:05,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:36:05 BoogieIcfgContainer [2018-10-24 21:36:05,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:36:05,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:36:05,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:36:05,819 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:36:05,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:35:50" (1/3) ... [2018-10-24 21:36:05,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af55ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:36:05, skipping insertion in model container [2018-10-24 21:36:05,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:35:53" (2/3) ... [2018-10-24 21:36:05,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af55ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:36:05, skipping insertion in model container [2018-10-24 21:36:05,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:36:05" (3/3) ... [2018-10-24 21:36:05,822 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label56_true-unreach-call.c [2018-10-24 21:36:05,832 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:36:05,846 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:36:05,868 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:36:05,918 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:36:05,919 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:36:05,919 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:36:05,919 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:36:05,919 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:36:05,919 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:36:05,919 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:36:05,920 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:36:05,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:36:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-24 21:36:05,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:36:05,987 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, 1, 1, 1] [2018-10-24 21:36:05,990 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:36:05,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:36:05,996 INFO L82 PathProgramCache]: Analyzing trace with hash -460452772, now seen corresponding path program 1 times [2018-10-24 21:36:05,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:36:06,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:06,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:36:06,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:06,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:36:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:36:06,505 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:36:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:36:06,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:36:06,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:36:06,664 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:36:06,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:36:06,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:36:06,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:36:06,689 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 21:36:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:36:16,563 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-10-24 21:36:16,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:36:16,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-10-24 21:36:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:36:16,600 INFO L225 Difference]: With dead ends: 3087 [2018-10-24 21:36:16,601 INFO L226 Difference]: Without dead ends: 1965 [2018-10-24 21:36:16,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:36:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-10-24 21:36:16,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-10-24 21:36:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-24 21:36:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-10-24 21:36:16,791 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 60 [2018-10-24 21:36:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:36:16,792 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-10-24 21:36:16,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:36:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-10-24 21:36:16,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 21:36:16,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:36:16,816 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, 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] [2018-10-24 21:36:16,817 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:36:16,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:36:16,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1916095534, now seen corresponding path program 1 times [2018-10-24 21:36:16,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:36:16,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:16,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:36:16,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:16,819 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:36:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:36:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:36:17,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:36:17,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:36:17,234 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:36:17,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:36:17,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:36:17,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:36:17,236 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-10-24 21:36:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:36:30,079 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-10-24 21:36:30,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:36:30,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-24 21:36:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:36:30,112 INFO L225 Difference]: With dead ends: 5634 [2018-10-24 21:36:30,112 INFO L226 Difference]: Without dead ends: 3681 [2018-10-24 21:36:30,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:36:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-10-24 21:36:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-10-24 21:36:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-10-24 21:36:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-10-24 21:36:30,249 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 137 [2018-10-24 21:36:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:36:30,250 INFO L481 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-10-24 21:36:30,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:36:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-10-24 21:36:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 21:36:30,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:36:30,256 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:36:30,256 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:36:30,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:36:30,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1937343332, now seen corresponding path program 1 times [2018-10-24 21:36:30,257 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:36:30,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:30,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:36:30,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:30,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:36:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:36:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:36:30,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:36:30,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:36:30,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:36:30,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:36:30,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:36:30,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:36:30,578 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-10-24 21:36:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:36:42,229 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-10-24 21:36:42,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:36:42,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-24 21:36:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:36:42,288 INFO L225 Difference]: With dead ends: 12385 [2018-10-24 21:36:42,288 INFO L226 Difference]: Without dead ends: 8741 [2018-10-24 21:36:42,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:36:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-10-24 21:36:42,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-10-24 21:36:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-10-24 21:36:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-10-24 21:36:42,544 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 156 [2018-10-24 21:36:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:36:42,544 INFO L481 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-10-24 21:36:42,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:36:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-10-24 21:36:42,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-24 21:36:42,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:36:42,550 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:36:42,550 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:36:42,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:36:42,550 INFO L82 PathProgramCache]: Analyzing trace with hash -411394740, now seen corresponding path program 1 times [2018-10-24 21:36:42,551 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:36:42,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:42,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:36:42,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:42,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:36:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:36:42,869 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:36:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:36:43,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:36:43,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:36:43,066 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:36:43,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:36:43,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:36:43,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:36:43,068 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-10-24 21:36:57,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:36:57,026 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-10-24 21:36:57,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:36:57,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2018-10-24 21:36:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:36:57,111 INFO L225 Difference]: With dead ends: 22909 [2018-10-24 21:36:57,111 INFO L226 Difference]: Without dead ends: 14231 [2018-10-24 21:36:57,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:36:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-10-24 21:36:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-10-24 21:36:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-10-24 21:36:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-10-24 21:36:57,481 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 168 [2018-10-24 21:36:57,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:36:57,482 INFO L481 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-10-24 21:36:57,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:36:57,482 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-10-24 21:36:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-24 21:36:57,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:36:57,492 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:36:57,492 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:36:57,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:36:57,493 INFO L82 PathProgramCache]: Analyzing trace with hash -457278060, now seen corresponding path program 1 times [2018-10-24 21:36:57,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:36:57,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:57,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:36:57,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:57,494 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:36:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:36:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 106 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:36:57,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:36:57,820 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:36:57,821 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-10-24 21:36:57,823 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3007], [3009], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3245], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:36:58,067 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:36:58,067 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:37:02,725 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:37:02,726 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:37:02,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:02,739 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:37:06,664 INFO L232 lantSequenceWeakener]: Weakened 211 states. On average, predicates are now at 71.9% of their original sizes. [2018-10-24 21:37:06,665 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:37:08,373 INFO L413 sIntCurrentIteration]: We have 231 unified AI predicates [2018-10-24 21:37:08,374 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:37:08,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:37:08,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-24 21:37:08,375 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:37:08,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 21:37:08,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 21:37:08,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:37:08,376 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 10 states. [2018-10-24 21:37:38,754 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:39:25,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 21:39:25,177 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:39:25,183 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:39:25,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:39:25 BoogieIcfgContainer [2018-10-24 21:39:25,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:39:25,184 INFO L168 Benchmark]: Toolchain (without parser) took 214545.58 ms. Allocated memory was 1.6 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 332.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:39:25,186 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:39:25,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2500.75 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:39:25,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 579.40 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 840.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:39:25,188 INFO L168 Benchmark]: Boogie Preprocessor took 362.27 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:39:25,189 INFO L168 Benchmark]: RCFGBuilder took 11729.87 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 169.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 30.8 MB). Peak memory consumption was 635.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:39:25,190 INFO L168 Benchmark]: TraceAbstraction took 199368.42 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 100.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:39:25,195 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2500.75 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 579.40 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 840.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 362.27 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11729.87 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 169.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 30.8 MB). Peak memory consumption was 635.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199368.42 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 100.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 171). Cancelled while BasicCegarLoop was constructing difference of abstraction (14057states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (4555 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 199.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 185.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2161 SDtfs, 16968 SDslu, 1819 SDs, 0 SdLazy, 20966 SolverSat, 6489 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 133.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 270 GetRequests, 232 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14057occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9958041958041957 AbsIntWeakeningRatio, 0.11688311688311688 AbsIntAvgWeakeningVarsNumRemoved, 30.272727272727273 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 268 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 753 NumberOfCodeBlocks, 753 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 748 ConstructedInterpolants, 0 QuantifiedInterpolants, 421877 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 270/341 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown