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/Problem18_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:06:18,043 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:06:18,046 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:06:18,060 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:06:18,061 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:06:18,062 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:06:18,063 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:06:18,065 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:06:18,068 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:06:18,069 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:06:18,070 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:06:18,070 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:06:18,071 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:06:18,078 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:06:18,079 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:06:18,080 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:06:18,081 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:06:18,082 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:06:18,084 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:06:18,085 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:06:18,086 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:06:18,088 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:06:18,090 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 02:06:18,097 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 02:06:18,121 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:06:18,122 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:06:18,123 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:06:18,123 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:06:18,124 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:06:18,124 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:06:18,124 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:06:18,124 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:06:18,124 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:06:18,127 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:06:18,127 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:06:18,128 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:06:18,128 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:06:18,128 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:06:18,129 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:06:18,129 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:06:18,129 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:06:18,130 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:06:18,130 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:06:18,130 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:06:18,130 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:06:18,130 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:06:18,131 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:06:18,132 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:06:18,132 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:06:18,133 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:06:18,133 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:06:18,133 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:06:18,133 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:06:18,134 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:06:18,134 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:06:18,134 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:06:18,134 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:06:18,134 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:06:18,135 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:06:18,135 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:06:18,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:06:18,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:06:18,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:06:18,210 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:06:18,210 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:06:18,211 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label30_true-unreach-call.c [2018-10-25 02:06:18,278 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ae519e95d/d3d6f9a597c545a399d441b37b5246fc/FLAGf7bd4c676 [2018-10-25 02:06:19,083 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:06:19,084 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label30_true-unreach-call.c [2018-10-25 02:06:19,111 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ae519e95d/d3d6f9a597c545a399d441b37b5246fc/FLAGf7bd4c676 [2018-10-25 02:06:19,132 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ae519e95d/d3d6f9a597c545a399d441b37b5246fc [2018-10-25 02:06:19,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:06:19,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:06:19,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:06:19,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:06:19,153 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:06:19,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:06:19" (1/1) ... [2018-10-25 02:06:19,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31151419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:19, skipping insertion in model container [2018-10-25 02:06:19,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:06:19" (1/1) ... [2018-10-25 02:06:19,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:06:19,305 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:06:20,370 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:06:20,376 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:06:20,872 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:06:20,902 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:06:20,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20 WrapperNode [2018-10-25 02:06:20,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:06:20,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:06:20,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:06:20,904 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:06:20,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (1/1) ... [2018-10-25 02:06:20,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (1/1) ... [2018-10-25 02:06:21,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:06:21,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:06:21,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:06:21,384 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:06:21,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (1/1) ... [2018-10-25 02:06:21,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (1/1) ... [2018-10-25 02:06:21,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (1/1) ... [2018-10-25 02:06:21,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (1/1) ... [2018-10-25 02:06:21,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (1/1) ... [2018-10-25 02:06:21,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (1/1) ... [2018-10-25 02:06:21,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (1/1) ... [2018-10-25 02:06:21,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:06:21,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:06:21,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:06:21,609 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:06:21,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (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 02:06:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:06:21,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:06:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 02:06:21,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 02:06:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:06:21,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:06:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:06:21,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:06:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:06:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:06:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:06:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:06:29,438 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:06:29,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:06:29 BoogieIcfgContainer [2018-10-25 02:06:29,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:06:29,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:06:29,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:06:29,445 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:06:29,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:06:19" (1/3) ... [2018-10-25 02:06:29,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3f5675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:06:29, skipping insertion in model container [2018-10-25 02:06:29,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:20" (2/3) ... [2018-10-25 02:06:29,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3f5675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:06:29, skipping insertion in model container [2018-10-25 02:06:29,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:06:29" (3/3) ... [2018-10-25 02:06:29,450 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label30_true-unreach-call.c [2018-10-25 02:06:29,460 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:06:29,469 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:06:29,488 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:06:29,535 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:06:29,535 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:06:29,535 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:06:29,536 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:06:29,536 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:06:29,536 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:06:29,536 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:06:29,536 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:06:29,577 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-25 02:06:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-25 02:06:29,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:06:29,588 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:06:29,591 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:06:29,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:29,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2116267860, now seen corresponding path program 1 times [2018-10-25 02:06:29,601 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:06:29,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:29,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:29,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:29,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:06:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:30,127 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-25 02:06:30,154 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 02:06:30,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:06:30,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:06:30,158 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:06:30,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:06:30,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:06:30,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:06:30,191 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-25 02:06:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:06:41,332 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-25 02:06:41,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:06:41,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-25 02:06:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:06:41,381 INFO L225 Difference]: With dead ends: 2974 [2018-10-25 02:06:41,382 INFO L226 Difference]: Without dead ends: 2193 [2018-10-25 02:06:41,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:06:41,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-25 02:06:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-10-25 02:06:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-10-25 02:06:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-10-25 02:06:41,620 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 50 [2018-10-25 02:06:41,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:06:41,621 INFO L481 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-10-25 02:06:41,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:06:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-10-25 02:06:41,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-25 02:06:41,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:06:41,636 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:41,636 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:06:41,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:41,637 INFO L82 PathProgramCache]: Analyzing trace with hash -940653118, now seen corresponding path program 1 times [2018-10-25 02:06:41,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:06:41,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:41,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:41,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:41,640 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:06:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:41,976 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:06:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:06:42,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:06:42,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:06:42,233 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:06:42,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:06:42,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:06:42,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:06:42,239 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-10-25 02:06:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:06:56,161 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-10-25 02:06:56,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:06:56,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-10-25 02:06:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:06:56,205 INFO L225 Difference]: With dead ends: 6600 [2018-10-25 02:06:56,205 INFO L226 Difference]: Without dead ends: 4413 [2018-10-25 02:06:56,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:06:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-10-25 02:06:56,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-10-25 02:06:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-10-25 02:06:56,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-10-25 02:06:56,371 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 120 [2018-10-25 02:06:56,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:06:56,372 INFO L481 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-10-25 02:06:56,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:06:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-10-25 02:06:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-25 02:06:56,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:06:56,385 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:56,388 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:06:56,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:56,388 INFO L82 PathProgramCache]: Analyzing trace with hash 599162315, now seen corresponding path program 1 times [2018-10-25 02:06:56,388 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:06:56,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:56,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:56,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:56,390 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:06:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:06:56,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:06:56,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:06:56,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:06:56,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:06:56,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:06:56,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:06:56,632 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-10-25 02:07:02,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:07:02,284 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-10-25 02:07:02,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:07:02,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-10-25 02:07:02,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:07:02,318 INFO L225 Difference]: With dead ends: 11002 [2018-10-25 02:07:02,319 INFO L226 Difference]: Without dead ends: 6630 [2018-10-25 02:07:02,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:07:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-10-25 02:07:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-10-25 02:07:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-25 02:07:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-10-25 02:07:02,495 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 147 [2018-10-25 02:07:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:07:02,497 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-10-25 02:07:02,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:07:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-10-25 02:07:02,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-25 02:07:02,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:07:02,500 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:02,500 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:07:02,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:02,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1887894889, now seen corresponding path program 1 times [2018-10-25 02:07:02,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:07:02,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:02,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:07:02,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:02,502 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:07:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:07:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:07:02,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:07:02,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:07:02,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:07:02,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:07:02,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:07:02,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:07:02,754 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-10-25 02:07:09,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:07:09,122 INFO L93 Difference]: Finished difference Result 13174 states and 17554 transitions. [2018-10-25 02:07:09,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:07:09,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-10-25 02:07:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:07:09,151 INFO L225 Difference]: With dead ends: 13174 [2018-10-25 02:07:09,152 INFO L226 Difference]: Without dead ends: 6590 [2018-10-25 02:07:09,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:07:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2018-10-25 02:07:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6590. [2018-10-25 02:07:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-25 02:07:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8069 transitions. [2018-10-25 02:07:09,300 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8069 transitions. Word has length 157 [2018-10-25 02:07:09,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:07:09,301 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 8069 transitions. [2018-10-25 02:07:09,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:07:09,301 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8069 transitions. [2018-10-25 02:07:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-25 02:07:09,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:07:09,304 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 02:07:09,305 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:07:09,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:09,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1024574149, now seen corresponding path program 1 times [2018-10-25 02:07:09,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:07:09,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:09,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:07:09,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:09,306 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:07:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:07:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 02:07:09,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:07:09,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:07:09,495 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:07:09,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:07:09,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:07:09,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:07:09,496 INFO L87 Difference]: Start difference. First operand 6590 states and 8069 transitions. Second operand 4 states. [2018-10-25 02:07:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:07:16,601 INFO L93 Difference]: Finished difference Result 26016 states and 32711 transitions. [2018-10-25 02:07:16,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:07:16,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 227 [2018-10-25 02:07:16,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:07:16,688 INFO L225 Difference]: With dead ends: 26016 [2018-10-25 02:07:16,688 INFO L226 Difference]: Without dead ends: 19432 [2018-10-25 02:07:16,710 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 [2018-10-25 02:07:16,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19432 states. [2018-10-25 02:07:17,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19432 to 19432. [2018-10-25 02:07:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19432 states. [2018-10-25 02:07:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19432 states to 19432 states and 23497 transitions. [2018-10-25 02:07:17,133 INFO L78 Accepts]: Start accepts. Automaton has 19432 states and 23497 transitions. Word has length 227 [2018-10-25 02:07:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:07:17,134 INFO L481 AbstractCegarLoop]: Abstraction has 19432 states and 23497 transitions. [2018-10-25 02:07:17,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:07:17,134 INFO L276 IsEmpty]: Start isEmpty. Operand 19432 states and 23497 transitions. [2018-10-25 02:07:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2018-10-25 02:07:17,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:07:17,183 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:17,183 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:07:17,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:17,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1794025893, now seen corresponding path program 1 times [2018-10-25 02:07:17,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:07:17,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:17,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:07:17,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:17,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:07:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:07:17,736 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:07:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 87 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:07:18,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:07:18,754 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:07:18,755 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 579 with the following transitions: [2018-10-25 02:07:18,758 INFO L202 CegarAbsIntRunner]: [0], [1], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1183], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1923], [1925], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-10-25 02:07:18,847 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:07:18,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:07:19,873 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 02:07:19,875 INFO L272 AbstractInterpreter]: Visited 407 different actions 407 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-25 02:07:19,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:19,920 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 02:07:21,201 INFO L232 lantSequenceWeakener]: Weakened 566 states. On average, predicates are now at 77.54% of their original sizes. [2018-10-25 02:07:21,201 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 02:07:21,582 INFO L413 sIntCurrentIteration]: We have 577 unified AI predicates [2018-10-25 02:07:21,583 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 02:07:21,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:07:21,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2018-10-25 02:07:21,584 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:07:21,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 02:07:21,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 02:07:21,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:07:21,586 INFO L87 Difference]: Start difference. First operand 19432 states and 23497 transitions. Second operand 8 states. [2018-10-25 02:08:22,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 02:08:22,787 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:93) 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:93) 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) [2018-10-25 02:08:22,793 INFO L168 Benchmark]: Toolchain (without parser) took 123648.38 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -419.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-25 02:08:22,794 INFO L168 Benchmark]: CDTParser took 0.22 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 02:08:22,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1756.95 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-25 02:08:22,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 478.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -933.0 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:08:22,796 INFO L168 Benchmark]: Boogie Preprocessor took 225.27 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: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2018-10-25 02:08:22,797 INFO L168 Benchmark]: RCFGBuilder took 7832.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 525.6 MB). Peak memory consumption was 525.6 MB. Max. memory is 7.1 GB. [2018-10-25 02:08:22,798 INFO L168 Benchmark]: TraceAbstraction took 113350.08 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -174.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-25 02:08:22,804 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1756.95 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 478.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -933.0 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.27 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: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7832.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 525.6 MB). Peak memory consumption was 525.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 113350.08 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -174.8 MB). Peak memory consumption was 1.6 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...