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_label47_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:41:33,170 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:41:33,172 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:41:33,189 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:41:33,190 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:41:33,191 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:41:33,192 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:41:33,194 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:41:33,195 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:41:33,196 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:41:33,197 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:41:33,197 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:41:33,198 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:41:33,199 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:41:33,200 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:41:33,201 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:41:33,202 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:41:33,204 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:41:33,206 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:41:33,208 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:41:33,209 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:41:33,210 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:41:33,212 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:41:33,221 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 23:41:33,251 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:41:33,251 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:41:33,252 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:41:33,252 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:41:33,253 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:41:33,253 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:41:33,253 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:41:33,253 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:41:33,253 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:41:33,253 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:41:33,254 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:41:33,255 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:41:33,255 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:41:33,255 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:41:33,256 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:41:33,256 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:41:33,256 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:41:33,257 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:41:33,257 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:41:33,257 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:41:33,257 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:41:33,257 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:41:33,258 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:41:33,259 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:41:33,260 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:41:33,260 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:41:33,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:41:33,260 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:41:33,260 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:41:33,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:41:33,261 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:41:33,261 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:41:33,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:41:33,262 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:41:33,262 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:41:33,262 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:41:33,333 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:41:33,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:41:33,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:41:33,351 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:41:33,352 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:41:33,353 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label47_false-unreach-call.c [2018-10-24 23:41:33,421 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0e9759496/20d914fc29e649bcad0b1a361280e2d5/FLAG8c404bc64 [2018-10-24 23:41:34,103 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:41:34,105 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label47_false-unreach-call.c [2018-10-24 23:41:34,127 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0e9759496/20d914fc29e649bcad0b1a361280e2d5/FLAG8c404bc64 [2018-10-24 23:41:34,143 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0e9759496/20d914fc29e649bcad0b1a361280e2d5 [2018-10-24 23:41:34,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:41:34,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:41:34,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:41:34,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:41:34,161 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:41:34,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:34" (1/1) ... [2018-10-24 23:41:34,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:34, skipping insertion in model container [2018-10-24 23:41:34,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:41:34" (1/1) ... [2018-10-24 23:41:34,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:41:34,262 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:41:35,138 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:41:35,143 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:41:35,582 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:41:35,606 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:41:35,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35 WrapperNode [2018-10-24 23:41:35,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:41:35,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:41:35,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:41:35,608 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:41:35,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (1/1) ... [2018-10-24 23:41:35,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (1/1) ... [2018-10-24 23:41:35,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:41:35,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:41:35,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:41:35,996 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:41:36,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (1/1) ... [2018-10-24 23:41:36,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (1/1) ... [2018-10-24 23:41:36,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (1/1) ... [2018-10-24 23:41:36,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (1/1) ... [2018-10-24 23:41:36,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (1/1) ... [2018-10-24 23:41:36,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (1/1) ... [2018-10-24 23:41:36,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (1/1) ... [2018-10-24 23:41:36,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:41:36,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:41:36,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:41:36,233 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:41:36,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (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 [2018-10-24 23:41:36,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:41:36,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:41:36,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:41:36,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:41:36,303 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:41:36,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:41:36,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:41:36,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:41:36,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:41:36,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:41:42,515 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:41:42,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:42 BoogieIcfgContainer [2018-10-24 23:41:42,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:41:42,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:41:42,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:41:42,522 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:41:42,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:41:34" (1/3) ... [2018-10-24 23:41:42,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45164ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:42, skipping insertion in model container [2018-10-24 23:41:42,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:41:35" (2/3) ... [2018-10-24 23:41:42,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45164ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:41:42, skipping insertion in model container [2018-10-24 23:41:42,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:41:42" (3/3) ... [2018-10-24 23:41:42,526 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label47_false-unreach-call.c [2018-10-24 23:41:42,535 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:41:42,544 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:41:42,561 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:41:42,601 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:41:42,601 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:41:42,601 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:41:42,602 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:41:42,602 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:41:42,602 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:41:42,602 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:41:42,602 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:41:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 23:41:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 23:41:42,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:42,643 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:41:42,645 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:42,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:42,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1243149204, now seen corresponding path program 1 times [2018-10-24 23:41:42,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:42,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:42,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:42,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:42,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:42,921 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 23:41:42,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:41:42,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:41:42,924 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:41:42,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:41:42,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:41:42,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:41:42,948 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-24 23:41:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:41:48,976 INFO L93 Difference]: Finished difference Result 1188 states and 2146 transitions. [2018-10-24 23:41:48,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:41:48,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-24 23:41:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:41:49,001 INFO L225 Difference]: With dead ends: 1188 [2018-10-24 23:41:49,001 INFO L226 Difference]: Without dead ends: 748 [2018-10-24 23:41:49,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:41:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2018-10-24 23:41:49,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2018-10-24 23:41:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2018-10-24 23:41:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1128 transitions. [2018-10-24 23:41:49,125 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1128 transitions. Word has length 16 [2018-10-24 23:41:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:41:49,126 INFO L481 AbstractCegarLoop]: Abstraction has 746 states and 1128 transitions. [2018-10-24 23:41:49,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:41:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1128 transitions. [2018-10-24 23:41:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 23:41:49,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:49,131 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1] [2018-10-24 23:41:49,132 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:49,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:49,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1523289623, now seen corresponding path program 1 times [2018-10-24 23:41:49,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:49,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:49,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:49,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:49,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:41:49,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:41:49,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:41:49,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:41:49,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:41:49,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:41:49,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:41:49,397 INFO L87 Difference]: Start difference. First operand 746 states and 1128 transitions. Second operand 4 states. [2018-10-24 23:41:57,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:41:57,343 INFO L93 Difference]: Finished difference Result 2736 states and 4249 transitions. [2018-10-24 23:41:57,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:41:57,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2018-10-24 23:41:57,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:41:57,359 INFO L225 Difference]: With dead ends: 2736 [2018-10-24 23:41:57,359 INFO L226 Difference]: Without dead ends: 1996 [2018-10-24 23:41:57,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:41:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2018-10-24 23:41:57,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1991. [2018-10-24 23:41:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2018-10-24 23:41:57,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2770 transitions. [2018-10-24 23:41:57,478 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2770 transitions. Word has length 86 [2018-10-24 23:41:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:41:57,478 INFO L481 AbstractCegarLoop]: Abstraction has 1991 states and 2770 transitions. [2018-10-24 23:41:57,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:41:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2770 transitions. [2018-10-24 23:41:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-24 23:41:57,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:57,500 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:41:57,502 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:57,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:57,502 INFO L82 PathProgramCache]: Analyzing trace with hash -881438278, now seen corresponding path program 1 times [2018-10-24 23:41:57,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:57,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:57,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:57,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:57,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 23:41:58,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:58,064 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:41:58,065 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-24 23:41:58,067 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [101], [103], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [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], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [821], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:41:58,129 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:41:58,130 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:41:59,278 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:41:59,280 INFO L272 AbstractInterpreter]: Visited 130 different actions 377 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 23:41:59,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:59,312 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:42:00,365 INFO L232 lantSequenceWeakener]: Weakened 231 states. On average, predicates are now at 77.77% of their original sizes. [2018-10-24 23:42:00,365 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:42:01,276 INFO L413 sIntCurrentIteration]: We have 235 unified AI predicates [2018-10-24 23:42:01,276 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:42:01,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:42:01,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-24 23:42:01,277 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:42:01,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:42:01,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:42:01,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:42:01,279 INFO L87 Difference]: Start difference. First operand 1991 states and 2770 transitions. Second operand 9 states. [2018-10-24 23:42:25,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 23:42:25,572 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 23:42:25,578 INFO L168 Benchmark]: Toolchain (without parser) took 51423.03 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -348.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 23:42:25,580 INFO L168 Benchmark]: CDTParser took 0.19 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 23:42:25,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1450.63 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 23:42:25,581 INFO L168 Benchmark]: Boogie Procedure Inliner took 387.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -888.1 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:42:25,582 INFO L168 Benchmark]: Boogie Preprocessor took 236.44 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:42:25,583 INFO L168 Benchmark]: RCFGBuilder took 6283.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.8 MB). Peak memory consumption was 295.8 MB. Max. memory is 7.1 GB. [2018-10-24 23:42:25,584 INFO L168 Benchmark]: TraceAbstraction took 43059.66 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 111.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 23:42:25,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1450.63 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 387.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -888.1 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 236.44 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6283.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.8 MB). Peak memory consumption was 295.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43059.66 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 111.1 MB). Peak memory consumption was 2.0 GB. 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...