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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label33_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:40:22,247 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:40:22,249 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:40:22,271 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:40:22,271 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:40:22,273 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:40:22,277 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:40:22,280 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:40:22,282 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:40:22,283 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:40:22,285 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:40:22,285 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:40:22,286 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:40:22,289 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:40:22,292 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:40:22,292 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:40:22,301 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:40:22,306 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:40:22,310 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:40:22,312 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:40:22,313 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:40:22,318 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:40:22,321 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:40:22,337 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:40:22,364 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:40:22,364 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:40:22,365 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:40:22,365 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:40:22,365 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:40:22,366 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:40:22,366 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:40:22,368 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:40:22,368 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:40:22,368 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:40:22,369 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:40:22,369 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:40:22,369 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:40:22,369 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:40:22,370 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:40:22,370 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:40:22,371 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:40:22,371 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:40:22,371 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:40:22,371 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:40:22,371 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:40:22,372 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:40:22,372 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:40:22,372 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:40:22,372 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:40:22,372 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:40:22,373 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:40:22,373 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:40:22,373 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:40:22,373 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:40:22,374 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:40:22,374 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:40:22,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:40:22,374 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:40:22,374 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:40:22,375 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:40:22,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:40:22,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:40:22,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:40:22,458 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:40:22,459 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:40:22,459 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label33_false-unreach-call.c [2018-10-24 23:40:22,530 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9d60bfdaf/2249273ffe174ae194e00e205fb9596d/FLAGdca1bf543 [2018-10-24 23:40:23,255 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:40:23,256 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label33_false-unreach-call.c [2018-10-24 23:40:23,279 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9d60bfdaf/2249273ffe174ae194e00e205fb9596d/FLAGdca1bf543 [2018-10-24 23:40:23,299 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9d60bfdaf/2249273ffe174ae194e00e205fb9596d [2018-10-24 23:40:23,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:40:23,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:40:23,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:40:23,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:40:23,322 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:40:23,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:40:23" (1/1) ... [2018-10-24 23:40:23,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:23, skipping insertion in model container [2018-10-24 23:40:23,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:40:23" (1/1) ... [2018-10-24 23:40:23,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:40:23,453 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:40:24,276 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:40:24,281 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:40:24,595 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:40:24,616 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:40:24,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24 WrapperNode [2018-10-24 23:40:24,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:40:24,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:40:24,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:40:24,618 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:40:24,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (1/1) ... [2018-10-24 23:40:24,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (1/1) ... [2018-10-24 23:40:25,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:40:25,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:40:25,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:40:25,019 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:40:25,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (1/1) ... [2018-10-24 23:40:25,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (1/1) ... [2018-10-24 23:40:25,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (1/1) ... [2018-10-24 23:40:25,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (1/1) ... [2018-10-24 23:40:25,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (1/1) ... [2018-10-24 23:40:25,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (1/1) ... [2018-10-24 23:40:25,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (1/1) ... [2018-10-24 23:40:25,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:40:25,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:40:25,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:40:25,225 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:40:25,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (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 23:40:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:40:25,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:40:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:40:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:40:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:40:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:40:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:40:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:40:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:40:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:40:32,577 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:40:32,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:40:32 BoogieIcfgContainer [2018-10-24 23:40:32,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:40:32,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:40:32,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:40:32,584 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:40:32,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:40:23" (1/3) ... [2018-10-24 23:40:32,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a268785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:40:32, skipping insertion in model container [2018-10-24 23:40:32,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:40:24" (2/3) ... [2018-10-24 23:40:32,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a268785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:40:32, skipping insertion in model container [2018-10-24 23:40:32,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:40:32" (3/3) ... [2018-10-24 23:40:32,588 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label33_false-unreach-call.c [2018-10-24 23:40:32,598 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:40:32,607 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:40:32,626 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:40:32,670 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:40:32,670 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:40:32,670 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:40:32,670 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:40:32,671 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:40:32,671 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:40:32,671 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:40:32,671 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:40:32,704 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 23:40:32,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-24 23:40:32,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:40:32,713 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] [2018-10-24 23:40:32,716 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:40:32,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:40:32,723 INFO L82 PathProgramCache]: Analyzing trace with hash 18376625, now seen corresponding path program 1 times [2018-10-24 23:40:32,725 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:40:32,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:32,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:40:32,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:32,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:40:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:40:33,215 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 23:40:33,223 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 23:40:33,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:40:33,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:40:33,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:40:33,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:40:33,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:40:33,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:40:33,257 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 23:40:41,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:40:41,995 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-10-24 23:40:41,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:40:41,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-24 23:40:41,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:40:42,029 INFO L225 Difference]: With dead ends: 1550 [2018-10-24 23:40:42,029 INFO L226 Difference]: Without dead ends: 1106 [2018-10-24 23:40:42,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:40:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-10-24 23:40:42,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-10-24 23:40:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-10-24 23:40:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-10-24 23:40:42,153 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 29 [2018-10-24 23:40:42,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:40:42,154 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-10-24 23:40:42,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:40:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-10-24 23:40:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 23:40:42,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:40:42,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:42,161 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:40:42,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:40:42,164 INFO L82 PathProgramCache]: Analyzing trace with hash -725356388, now seen corresponding path program 1 times [2018-10-24 23:40:42,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:40:42,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:42,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:40:42,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:42,166 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:40:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:40:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:40:42,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:40:42,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:40:42,559 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:40:42,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:40:42,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:40:42,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:40:42,562 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-10-24 23:40:51,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:40:51,187 INFO L93 Difference]: Finished difference Result 2245 states and 3758 transitions. [2018-10-24 23:40:51,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 23:40:51,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-10-24 23:40:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:40:51,203 INFO L225 Difference]: With dead ends: 2245 [2018-10-24 23:40:51,203 INFO L226 Difference]: Without dead ends: 1489 [2018-10-24 23:40:51,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:40:51,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2018-10-24 23:40:51,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1457. [2018-10-24 23:40:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-10-24 23:40:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-10-24 23:40:51,274 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 102 [2018-10-24 23:40:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:40:51,275 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-10-24 23:40:51,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:40:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-10-24 23:40:51,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 23:40:51,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:40:51,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:51,281 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:40:51,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:40:51,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2080180052, now seen corresponding path program 1 times [2018-10-24 23:40:51,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:40:51,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:51,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:40:51,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:51,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:40:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:40:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:40:51,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:40:51,539 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:40:51,540 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 111 with the following transitions: [2018-10-24 23:40:51,542 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:40:51,588 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:40:51,588 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:40:52,063 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:40:52,068 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 23:40:52,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:40:52,102 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:40:52,402 INFO L232 lantSequenceWeakener]: Weakened 104 states. On average, predicates are now at 77.74% of their original sizes. [2018-10-24 23:40:52,403 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:40:52,648 INFO L413 sIntCurrentIteration]: We have 109 unified AI predicates [2018-10-24 23:40:52,648 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:40:52,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:40:52,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-24 23:40:52,650 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:40:52,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:40:52,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:40:52,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:40:52,653 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 6 states. [2018-10-24 23:41:16,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:41:16,094 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger: modulus not positive at java.math.BigInteger.mod(BigInteger.java:2458) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:154) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:100) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:78) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleAssumeStatement(NonrelationalStatementProcessor.java:363) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:160) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:142) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:128) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:362) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:353) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:305) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:537) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalTransitionWithValidState(AbsIntHoareTripleChecker.java:352) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalAbsInt(AbsIntHoareTripleChecker.java:249) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternal(AbsIntHoareTripleChecker.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-24 23:41:16,100 INFO L168 Benchmark]: Toolchain (without parser) took 52785.70 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 452.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:41:16,101 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-24 23:41:16,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1301.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-24 23:41:16,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 400.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:41:16,103 INFO L168 Benchmark]: Boogie Preprocessor took 205.69 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 23:41:16,104 INFO L168 Benchmark]: RCFGBuilder took 7354.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 324.4 MB). Peak memory consumption was 324.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:41:16,105 INFO L168 Benchmark]: TraceAbstraction took 43518.80 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.6 GB in the end (delta: -1.7 GB). Peak memory consumption was 134.1 MB. Max. memory is 7.1 GB. [2018-10-24 23:41:16,111 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1301.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 400.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 205.69 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7354.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 324.4 MB). Peak memory consumption was 324.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43518.80 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.6 GB in the end (delta: -1.7 GB). Peak memory consumption was 134.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger: modulus not positive de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger: modulus not positive: java.math.BigInteger.mod(BigInteger.java:2458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...