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/Problem10_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:23:32,116 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:23:32,118 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:23:32,137 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:23:32,138 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:23:32,139 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:23:32,140 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:23:32,142 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:23:32,143 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:23:32,144 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:23:32,147 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:23:32,148 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:23:32,148 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:23:32,149 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:23:32,153 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:23:32,154 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:23:32,156 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:23:32,161 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:23:32,165 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:23:32,166 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:23:32,167 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:23:32,172 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:23:32,176 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:23:32,189 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:23:32,212 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:23:32,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:23:32,215 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:23:32,215 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:23:32,216 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:23:32,219 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:23:32,219 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:23:32,219 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:23:32,220 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:23:32,220 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:23:32,220 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:23:32,220 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:23:32,220 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:23:32,220 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:23:32,222 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:23:32,222 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:23:32,222 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:23:32,222 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:23:32,223 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:23:32,223 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:23:32,223 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:23:32,223 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:23:32,223 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:23:32,223 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:23:32,224 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:23:32,225 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:23:32,226 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:23:32,226 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:23:32,226 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:23:32,226 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:23:32,226 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:23:32,227 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:23:32,227 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:23:32,227 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:23:32,227 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:23:32,227 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:23:32,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:23:32,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:23:32,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:23:32,300 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:23:32,301 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:23:32,302 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c [2018-10-25 01:23:32,360 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9c3f66a05/26b3e2480d4f47b6a17d293cc7e5bdad/FLAG59b61422c [2018-10-25 01:23:32,985 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:23:32,986 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label13_true-unreach-call.c [2018-10-25 01:23:33,006 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9c3f66a05/26b3e2480d4f47b6a17d293cc7e5bdad/FLAG59b61422c [2018-10-25 01:23:33,026 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9c3f66a05/26b3e2480d4f47b6a17d293cc7e5bdad [2018-10-25 01:23:33,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:23:33,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:23:33,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:23:33,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:23:33,048 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:23:33,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:33,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dcfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33, skipping insertion in model container [2018-10-25 01:23:33,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:33,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:23:33,150 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:23:33,662 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:23:33,667 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:23:33,792 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:23:33,810 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:23:33,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33 WrapperNode [2018-10-25 01:23:33,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:23:33,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:23:33,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:23:33,812 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:23:33,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:33,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:34,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:23:34,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:23:34,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:23:34,012 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:23:34,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:34,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:34,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:34,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:34,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:34,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:34,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (1/1) ... [2018-10-25 01:23:34,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:23:34,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:23:34,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:23:34,126 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:23:34,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:23:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:23:34,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:23:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:23:34,206 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:23:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:23:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:23:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:23:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:23:37,543 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:23:37,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:23:37 BoogieIcfgContainer [2018-10-25 01:23:37,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:23:37,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:23:37,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:23:37,550 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:23:37,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:23:33" (1/3) ... [2018-10-25 01:23:37,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af2ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:23:37, skipping insertion in model container [2018-10-25 01:23:37,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:23:33" (2/3) ... [2018-10-25 01:23:37,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af2ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:23:37, skipping insertion in model container [2018-10-25 01:23:37,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:23:37" (3/3) ... [2018-10-25 01:23:37,554 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label13_true-unreach-call.c [2018-10-25 01:23:37,563 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:23:37,574 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:23:37,591 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:23:37,639 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:23:37,639 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:23:37,639 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:23:37,639 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:23:37,640 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:23:37,640 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:23:37,640 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:23:37,640 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:23:37,667 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-25 01:23:37,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-25 01:23:37,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:23:37,679 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:23:37,681 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:23:37,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:23:37,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1833590460, now seen corresponding path program 1 times [2018-10-25 01:23:37,691 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:23:37,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:37,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:23:37,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:37,743 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:23:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:23:38,237 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:23:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:38,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:23:38,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:23:38,370 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:23:38,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:23:38,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:23:38,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:23:38,396 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-25 01:23:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:23:40,243 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-25 01:23:40,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:23:40,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-10-25 01:23:40,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:23:40,268 INFO L225 Difference]: With dead ends: 574 [2018-10-25 01:23:40,268 INFO L226 Difference]: Without dead ends: 356 [2018-10-25 01:23:40,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:23:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-25 01:23:40,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-25 01:23:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-25 01:23:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-25 01:23:40,354 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 62 [2018-10-25 01:23:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:23:40,355 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-25 01:23:40,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:23:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-25 01:23:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-25 01:23:40,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:23:40,366 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:23:40,367 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:23:40,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:23:40,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1187218136, now seen corresponding path program 1 times [2018-10-25 01:23:40,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:23:40,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:40,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:23:40,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:40,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:23:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:23:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:40,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:23:40,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:23:40,910 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:23:40,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:23:40,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:23:40,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:23:40,914 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-25 01:23:44,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:23:44,760 INFO L93 Difference]: Finished difference Result 1140 states and 2022 transitions. [2018-10-25 01:23:44,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:23:44,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2018-10-25 01:23:44,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:23:44,770 INFO L225 Difference]: With dead ends: 1140 [2018-10-25 01:23:44,770 INFO L226 Difference]: Without dead ends: 790 [2018-10-25 01:23:44,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:23:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-10-25 01:23:44,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784. [2018-10-25 01:23:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-10-25 01:23:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions. [2018-10-25 01:23:44,826 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 182 [2018-10-25 01:23:44,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:23:44,827 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions. [2018-10-25 01:23:44,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:23:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions. [2018-10-25 01:23:44,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-25 01:23:44,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:23:44,834 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:23:44,835 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:23:44,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:23:44,835 INFO L82 PathProgramCache]: Analyzing trace with hash 853127875, now seen corresponding path program 1 times [2018-10-25 01:23:44,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:23:44,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:44,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:23:44,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:44,837 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:23:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:23:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:45,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:23:45,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:23:45,267 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:23:45,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:23:45,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:23:45,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:23:45,270 INFO L87 Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states. [2018-10-25 01:23:50,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:23:50,389 INFO L93 Difference]: Finished difference Result 1975 states and 3367 transitions. [2018-10-25 01:23:50,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:23:50,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-10-25 01:23:50,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:23:50,409 INFO L225 Difference]: With dead ends: 1975 [2018-10-25 01:23:50,409 INFO L226 Difference]: Without dead ends: 1197 [2018-10-25 01:23:50,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:23:50,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2018-10-25 01:23:50,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177. [2018-10-25 01:23:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2018-10-25 01:23:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions. [2018-10-25 01:23:50,455 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 189 [2018-10-25 01:23:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:23:50,456 INFO L481 AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions. [2018-10-25 01:23:50,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:23:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions. [2018-10-25 01:23:50,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-25 01:23:50,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:23:50,464 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 01:23:50,464 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:23:50,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:23:50,465 INFO L82 PathProgramCache]: Analyzing trace with hash 751323799, now seen corresponding path program 1 times [2018-10-25 01:23:50,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:23:50,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:50,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:23:50,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:23:50,466 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:23:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:23:50,982 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 01:23:51,183 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-25 01:23:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:51,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:23:51,782 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:23:51,783 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-25 01:23:51,785 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-25 01:23:51,831 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:23:51,831 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:23:54,243 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:23:54,245 INFO L272 AbstractInterpreter]: Visited 129 different actions 507 times. Merged at 7 different actions 27 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-25 01:23:54,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:23:54,290 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:23:54,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:23:54,291 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:23:54,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:23:54,304 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:23:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:23:54,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:23:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:55,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:23:55,533 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-25 01:23:55,688 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-25 01:23:55,855 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-10-25 01:23:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:23:56,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:23:56,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2018-10-25 01:23:56,394 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:23:56,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-25 01:23:56,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-25 01:23:56,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-10-25 01:23:56,396 INFO L87 Difference]: Start difference. First operand 1177 states and 1754 transitions. Second operand 16 states. [2018-10-25 01:23:57,239 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2018-10-25 01:24:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:24:06,634 INFO L93 Difference]: Finished difference Result 3810 states and 6145 transitions. [2018-10-25 01:24:06,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-25 01:24:06,634 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 253 [2018-10-25 01:24:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:24:06,662 INFO L225 Difference]: With dead ends: 3810 [2018-10-25 01:24:06,663 INFO L226 Difference]: Without dead ends: 2639 [2018-10-25 01:24:06,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 517 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=654, Invalid=2102, Unknown=0, NotChecked=0, Total=2756 [2018-10-25 01:24:06,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2018-10-25 01:24:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2321. [2018-10-25 01:24:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2321 states. [2018-10-25 01:24:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3108 transitions. [2018-10-25 01:24:06,791 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3108 transitions. Word has length 253 [2018-10-25 01:24:06,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:24:06,792 INFO L481 AbstractCegarLoop]: Abstraction has 2321 states and 3108 transitions. [2018-10-25 01:24:06,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-25 01:24:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3108 transitions. [2018-10-25 01:24:06,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-25 01:24:06,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:24:06,804 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:24:06,805 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:24:06,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:24:06,805 INFO L82 PathProgramCache]: Analyzing trace with hash 55644656, now seen corresponding path program 1 times [2018-10-25 01:24:06,805 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:24:06,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:24:06,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:24:06,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:24:06,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:24:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:24:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:24:07,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:24:07,366 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:24:07,366 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-10-25 01:24:07,367 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [718], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-25 01:24:07,378 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:24:07,378 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:24:07,692 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.ArithmeticException: BigInteger: modulus not positive at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) 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) Caused by: 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: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.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.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.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-10-25 01:24:07,703 INFO L168 Benchmark]: Toolchain (without parser) took 34663.73 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -583.8 MB). Peak memory consumption was 537.1 MB. Max. memory is 7.1 GB. [2018-10-25 01:24:07,705 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-25 01:24:07,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:24:07,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 199.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.9 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:24:07,708 INFO L168 Benchmark]: Boogie Preprocessor took 114.14 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:24:07,710 INFO L168 Benchmark]: RCFGBuilder took 3418.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 128.7 MB). Peak memory consumption was 128.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:24:07,712 INFO L168 Benchmark]: TraceAbstraction took 30157.40 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 372.8 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 90.6 MB). Peak memory consumption was 463.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:24:07,718 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 769.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 199.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.9 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.14 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3418.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 128.7 MB). Peak memory consumption was 128.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30157.40 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 372.8 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 90.6 MB). Peak memory consumption was 463.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.ArithmeticException: BigInteger: modulus not positive de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.ArithmeticException: BigInteger: modulus not positive: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...