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/Problem12_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:38:32,133 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:38:32,135 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:38:32,148 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:38:32,148 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:38:32,149 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:38:32,151 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:38:32,152 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:38:32,154 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:38:32,155 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:38:32,156 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:38:32,156 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:38:32,157 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:38:32,158 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:38:32,159 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:38:32,160 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:38:32,161 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:38:32,163 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:38:32,168 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:38:32,172 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:38:32,173 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:38:32,179 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:38:32,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:38:32,192 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 [2018-10-25 01:38:32,221 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:38:32,221 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:38:32,223 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:38:32,223 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:38:32,223 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:38:32,223 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:38:32,224 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:38:32,224 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:38:32,224 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:38:32,224 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:38:32,224 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:38:32,225 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:38:32,225 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:38:32,225 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:38:32,226 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:38:32,226 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:38:32,227 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:38:32,227 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:38:32,227 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:38:32,227 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:38:32,227 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:38:32,228 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:38:32,228 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:38:32,228 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:38:32,228 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:38:32,228 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:38:32,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:38:32,231 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:38:32,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:38:32,231 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:38:32,231 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:38:32,232 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:38:32,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:38:32,232 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:38:32,232 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:38:32,232 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:38:32,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:38:32,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:38:32,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:38:32,317 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:38:32,317 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:38:32,318 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-10-25 01:38:32,381 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7cfac02af/796cc0db74f649438a516d94a3d91872/FLAG24c1b3c09 [2018-10-25 01:38:33,215 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:38:33,216 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-10-25 01:38:33,249 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7cfac02af/796cc0db74f649438a516d94a3d91872/FLAG24c1b3c09 [2018-10-25 01:38:33,270 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7cfac02af/796cc0db74f649438a516d94a3d91872 [2018-10-25 01:38:33,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:38:33,284 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:38:33,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:38:33,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:38:33,289 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:38:33,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:38:33" (1/1) ... [2018-10-25 01:38:33,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:33, skipping insertion in model container [2018-10-25 01:38:33,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:38:33" (1/1) ... [2018-10-25 01:38:33,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:38:33,479 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:38:34,780 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:38:34,784 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:38:35,379 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:38:35,411 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:38:35,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35 WrapperNode [2018-10-25 01:38:35,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:38:35,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:38:35,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:38:35,413 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:38:35,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (1/1) ... [2018-10-25 01:38:35,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (1/1) ... [2018-10-25 01:38:35,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:38:35,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:38:35,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:38:35,910 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:38:35,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (1/1) ... [2018-10-25 01:38:35,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (1/1) ... [2018-10-25 01:38:35,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (1/1) ... [2018-10-25 01:38:35,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (1/1) ... [2018-10-25 01:38:36,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (1/1) ... [2018-10-25 01:38:36,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (1/1) ... [2018-10-25 01:38:36,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (1/1) ... [2018-10-25 01:38:36,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:38:36,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:38:36,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:38:36,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:38:36,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (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 [2018-10-25 01:38:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:38:36,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:38:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-25 01:38:36,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-25 01:38:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 01:38:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 01:38:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:38:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:38:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:38:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:38:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:38:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:38:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:38:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:38:48,429 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:38:48,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:38:48 BoogieIcfgContainer [2018-10-25 01:38:48,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:38:48,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:38:48,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:38:48,435 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:38:48,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:38:33" (1/3) ... [2018-10-25 01:38:48,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6629a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:38:48, skipping insertion in model container [2018-10-25 01:38:48,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:38:35" (2/3) ... [2018-10-25 01:38:48,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6629a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:38:48, skipping insertion in model container [2018-10-25 01:38:48,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:38:48" (3/3) ... [2018-10-25 01:38:48,439 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27_true-unreach-call.c [2018-10-25 01:38:48,448 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:38:48,458 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:38:48,476 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:38:48,530 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:38:48,531 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:38:48,531 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:38:48,531 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:38:48,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:38:48,531 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:38:48,531 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:38:48,532 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:38:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-25 01:38:48,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-25 01:38:48,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:38:48,585 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] [2018-10-25 01:38:48,588 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:38:48,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:38:48,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1410046180, now seen corresponding path program 1 times [2018-10-25 01:38:48,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:38:48,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:38:48,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:38:48,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:38:48,656 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:38:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:38:49,081 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:38:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:38:49,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:38:49,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:38:49,195 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:38:49,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:38:49,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:38:49,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:38:49,222 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-25 01:38:57,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:38:57,104 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-25 01:38:57,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:38:57,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-10-25 01:38:57,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:38:57,149 INFO L225 Difference]: With dead ends: 2446 [2018-10-25 01:38:57,150 INFO L226 Difference]: Without dead ends: 1604 [2018-10-25 01:38:57,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:38:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-25 01:38:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-25 01:38:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-25 01:38:57,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-25 01:38:57,332 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 38 [2018-10-25 01:38:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:38:57,333 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-25 01:38:57,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:38:57,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-25 01:38:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-25 01:38:57,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:38:57,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:38:57,344 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:38:57,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:38:57,345 INFO L82 PathProgramCache]: Analyzing trace with hash -552195830, now seen corresponding path program 1 times [2018-10-25 01:38:57,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:38:57,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:38:57,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:38:57,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:38:57,348 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:38:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:38:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:38:57,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:38:57,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:38:57,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:38:57,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:38:57,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:38:57,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:38:57,694 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-25 01:39:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:39:11,038 INFO L93 Difference]: Finished difference Result 4811 states and 8985 transitions. [2018-10-25 01:39:11,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:39:11,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-10-25 01:39:11,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:39:11,068 INFO L225 Difference]: With dead ends: 4811 [2018-10-25 01:39:11,068 INFO L226 Difference]: Without dead ends: 3213 [2018-10-25 01:39:11,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:39:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2018-10-25 01:39:11,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3197. [2018-10-25 01:39:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2018-10-25 01:39:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 5703 transitions. [2018-10-25 01:39:11,173 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 5703 transitions. Word has length 112 [2018-10-25 01:39:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:39:11,173 INFO L481 AbstractCegarLoop]: Abstraction has 3197 states and 5703 transitions. [2018-10-25 01:39:11,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:39:11,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 5703 transitions. [2018-10-25 01:39:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-25 01:39:11,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:39:11,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:39:11,180 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:39:11,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:39:11,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1294703450, now seen corresponding path program 1 times [2018-10-25 01:39:11,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:39:11,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:39:11,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:39:11,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:39:11,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:39:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:39:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:39:11,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:39:11,449 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:39:11,451 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-10-25 01:39:11,453 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2071], [2073], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-25 01:39:11,500 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:39:11,500 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:39:12,172 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:39:12,173 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:39:12,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:39:12,213 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:39:12,923 INFO L232 lantSequenceWeakener]: Weakened 28 states. On average, predicates are now at 78.83% of their original sizes. [2018-10-25 01:39:12,923 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:39:14,217 INFO L413 sIntCurrentIteration]: We have 113 unified AI predicates [2018-10-25 01:39:14,217 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:39:14,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:39:14,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2018-10-25 01:39:14,218 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:39:14,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-25 01:39:14,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-25 01:39:14,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-10-25 01:39:14,220 INFO L87 Difference]: Start difference. First operand 3197 states and 5703 transitions. Second operand 14 states. [2018-10-25 01:39:31,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-25 01:39:31,104 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.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:72) 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) [2018-10-25 01:39:31,110 INFO L168 Benchmark]: Toolchain (without parser) took 57827.99 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -900.9 MB). Peak memory consumption was 376.3 MB. Max. memory is 7.1 GB. [2018-10-25 01:39:31,112 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:39:31,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2127.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:39:31,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 496.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:39:31,114 INFO L168 Benchmark]: Boogie Preprocessor took 242.97 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: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:39:31,115 INFO L168 Benchmark]: RCFGBuilder took 12277.50 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 172.0 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -171.4 MB). Peak memory consumption was 666.9 MB. Max. memory is 7.1 GB. [2018-10-25 01:39:31,116 INFO L168 Benchmark]: TraceAbstraction took 42678.10 ms. Allocated memory was 2.5 GB in the beginning and 2.8 GB in the end (delta: 317.7 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 59.8 MB). Peak memory consumption was 377.5 MB. Max. memory is 7.1 GB. [2018-10-25 01:39:31,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2127.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 496.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 242.97 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: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12277.50 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 172.0 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -171.4 MB). Peak memory consumption was 666.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42678.10 ms. Allocated memory was 2.5 GB in the beginning and 2.8 GB in the end (delta: 317.7 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 59.8 MB). Peak memory consumption was 377.5 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...