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/Problem11_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:31:16,725 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:31:16,727 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:31:16,743 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:31:16,744 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:31:16,746 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:31:16,747 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:31:16,749 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:31:16,752 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:31:16,752 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:31:16,762 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:31:16,762 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:31:16,763 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:31:16,767 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:31:16,768 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:31:16,769 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:31:16,772 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:31:16,776 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:31:16,780 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:31:16,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:31:16,784 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:31:16,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:31:16,788 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:31:16,789 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:31:16,789 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:31:16,789 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:31:16,790 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:31:16,792 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:31:16,793 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:31:16,796 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:31:16,796 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:31:16,798 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 01:31:16,798 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 01:31:16,798 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 01:31:16,799 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 01:31:16,800 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 01:31:16,800 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 01:31:16,828 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:31:16,828 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:31:16,829 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:31:16,829 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:31:16,829 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:31:16,830 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:31:16,830 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:31:16,830 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:31:16,830 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:31:16,830 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:31:16,831 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:31:16,831 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:31:16,831 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:31:16,831 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:31:16,832 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:31:16,832 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:31:16,832 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:31:16,832 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:31:16,833 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:31:16,833 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:31:16,833 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:31:16,833 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:31:16,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:31:16,834 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:31:16,834 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:31:16,834 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:31:16,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:31:16,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:31:16,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:31:16,835 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:31:16,835 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:31:16,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:31:16,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:31:16,835 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:31:16,836 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:31:16,836 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:31:16,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:31:16,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:31:16,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:31:16,904 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:31:16,904 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:31:16,905 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label33_true-unreach-call.c [2018-10-25 01:31:16,963 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42a7663e0/2e255a8ad3ed4afa8dfcfedc6231deb7/FLAG3cce5c3b5 [2018-10-25 01:31:17,625 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:31:17,626 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label33_true-unreach-call.c [2018-10-25 01:31:17,640 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42a7663e0/2e255a8ad3ed4afa8dfcfedc6231deb7/FLAG3cce5c3b5 [2018-10-25 01:31:17,656 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42a7663e0/2e255a8ad3ed4afa8dfcfedc6231deb7 [2018-10-25 01:31:17,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:31:17,670 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:31:17,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:31:17,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:31:17,675 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:31:17,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:31:17" (1/1) ... [2018-10-25 01:31:17,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e2ffdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:17, skipping insertion in model container [2018-10-25 01:31:17,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:31:17" (1/1) ... [2018-10-25 01:31:17,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:31:17,782 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:31:18,346 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:31:18,351 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:31:18,544 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:31:18,570 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:31:18,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18 WrapperNode [2018-10-25 01:31:18,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:31:18,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:31:18,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:31:18,572 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:31:18,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (1/1) ... [2018-10-25 01:31:18,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (1/1) ... [2018-10-25 01:31:18,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:31:18,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:31:18,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:31:18,885 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:31:18,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (1/1) ... [2018-10-25 01:31:18,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (1/1) ... [2018-10-25 01:31:18,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (1/1) ... [2018-10-25 01:31:18,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (1/1) ... [2018-10-25 01:31:18,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (1/1) ... [2018-10-25 01:31:18,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (1/1) ... [2018-10-25 01:31:19,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (1/1) ... [2018-10-25 01:31:19,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:31:19,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:31:19,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:31:19,051 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:31:19,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (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 01:31:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:31:19,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:31:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:31:19,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:31:19,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:31:19,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:31:19,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:31:19,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:31:24,011 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:31:24,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:31:24 BoogieIcfgContainer [2018-10-25 01:31:24,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:31:24,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:31:24,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:31:24,017 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:31:24,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:31:17" (1/3) ... [2018-10-25 01:31:24,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134c86ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:31:24, skipping insertion in model container [2018-10-25 01:31:24,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:31:18" (2/3) ... [2018-10-25 01:31:24,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134c86ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:31:24, skipping insertion in model container [2018-10-25 01:31:24,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:31:24" (3/3) ... [2018-10-25 01:31:24,021 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label33_true-unreach-call.c [2018-10-25 01:31:24,032 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:31:24,041 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:31:24,058 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:31:24,099 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:31:24,100 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:31:24,100 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:31:24,100 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:31:24,100 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:31:24,100 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:31:24,100 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:31:24,101 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:31:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:31:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-25 01:31:24,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:24,140 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] [2018-10-25 01:31:24,143 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:24,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:24,149 INFO L82 PathProgramCache]: Analyzing trace with hash 303379937, now seen corresponding path program 1 times [2018-10-25 01:31:24,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:24,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:24,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:24,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:24,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:24,638 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-25 01:31:24,654 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 01:31:24,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:31:24,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:31:24,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:24,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:31:24,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:31:24,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:31:24,686 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-25 01:31:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:28,567 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-10-25 01:31:28,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:31:28,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-10-25 01:31:28,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:28,592 INFO L225 Difference]: With dead ends: 1001 [2018-10-25 01:31:28,593 INFO L226 Difference]: Without dead ends: 702 [2018-10-25 01:31:28,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 01:31:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-10-25 01:31:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-10-25 01:31:28,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-10-25 01:31:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-10-25 01:31:28,707 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 35 [2018-10-25 01:31:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:28,707 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-10-25 01:31:28,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:31:28,708 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-10-25 01:31:28,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-25 01:31:28,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:28,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:28,722 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:28,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:28,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1558950259, now seen corresponding path program 1 times [2018-10-25 01:31:28,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:28,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:28,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:28,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:28,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:29,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:31:29,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:31:29,066 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:29,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:31:29,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:31:29,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:31:29,070 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-10-25 01:31:33,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:33,817 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-10-25 01:31:33,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:31:33,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-25 01:31:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:33,838 INFO L225 Difference]: With dead ends: 2534 [2018-10-25 01:31:33,838 INFO L226 Difference]: Without dead ends: 1841 [2018-10-25 01:31:33,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:31:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-10-25 01:31:33,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-10-25 01:31:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-10-25 01:31:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-10-25 01:31:33,943 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 108 [2018-10-25 01:31:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:33,944 INFO L481 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-10-25 01:31:33,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:31:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-10-25 01:31:33,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-25 01:31:33,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:33,954 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:31:33,955 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:33,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:33,955 INFO L82 PathProgramCache]: Analyzing trace with hash 620005359, now seen corresponding path program 1 times [2018-10-25 01:31:33,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:33,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:33,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:33,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:33,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-25 01:31:34,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:31:34,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:31:34,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:34,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:31:34,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:31:34,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:31:34,406 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-10-25 01:31:37,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:37,840 INFO L93 Difference]: Finished difference Result 4744 states and 7405 transitions. [2018-10-25 01:31:37,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:31:37,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 211 [2018-10-25 01:31:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:37,860 INFO L225 Difference]: With dead ends: 4744 [2018-10-25 01:31:37,860 INFO L226 Difference]: Without dead ends: 2935 [2018-10-25 01:31:37,872 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 01:31:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2018-10-25 01:31:37,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2922. [2018-10-25 01:31:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2018-10-25 01:31:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 4045 transitions. [2018-10-25 01:31:37,962 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 4045 transitions. Word has length 211 [2018-10-25 01:31:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:37,963 INFO L481 AbstractCegarLoop]: Abstraction has 2922 states and 4045 transitions. [2018-10-25 01:31:37,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:31:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 4045 transitions. [2018-10-25 01:31:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-25 01:31:37,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:37,978 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, 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] [2018-10-25 01:31:37,978 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:37,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1339838587, now seen corresponding path program 1 times [2018-10-25 01:31:37,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:37,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:37,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:37,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:37,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:38,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:38,344 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:31:38,345 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-25 01:31:38,348 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], [181], [183], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [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], [626], [630], [634], [638], [642], [646], [650], [653], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:31:38,405 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:31:38,406 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:31:39,416 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:31:39,418 INFO L272 AbstractInterpreter]: Visited 113 different actions 113 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:31:39,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:39,464 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:31:40,296 INFO L232 lantSequenceWeakener]: Weakened 208 states. On average, predicates are now at 73.29% of their original sizes. [2018-10-25 01:31:40,296 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:31:40,559 INFO L413 sIntCurrentIteration]: We have 216 unified AI predicates [2018-10-25 01:31:40,559 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:31:40,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:31:40,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:31:40,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:40,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:31:40,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:31:40,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:31:40,563 INFO L87 Difference]: Start difference. First operand 2922 states and 4045 transitions. Second operand 6 states. [2018-10-25 01:33:31,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:31,736 INFO L93 Difference]: Finished difference Result 6030 states and 8343 transitions. [2018-10-25 01:33:31,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:33:31,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-10-25 01:33:31,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:31,753 INFO L225 Difference]: With dead ends: 6030 [2018-10-25 01:33:31,753 INFO L226 Difference]: Without dead ends: 3114 [2018-10-25 01:33:31,762 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 217 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:33:31,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2018-10-25 01:33:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3112. [2018-10-25 01:33:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2018-10-25 01:33:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4245 transitions. [2018-10-25 01:33:31,842 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4245 transitions. Word has length 217 [2018-10-25 01:33:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:31,843 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4245 transitions. [2018-10-25 01:33:31,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:33:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4245 transitions. [2018-10-25 01:33:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-25 01:33:31,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:31,850 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, 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] [2018-10-25 01:33:31,851 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:31,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:31,851 INFO L82 PathProgramCache]: Analyzing trace with hash 512910636, now seen corresponding path program 1 times [2018-10-25 01:33:31,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:31,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:31,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:31,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:31,855 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:32,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:32,208 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:33:32,209 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-10-25 01:33:32,209 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], [181], [183], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [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], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:33:32,215 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:33:32,216 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:32,635 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:33:32,635 INFO L272 AbstractInterpreter]: Visited 135 different actions 393 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:33:32,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:32,663 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:33:33,495 INFO L232 lantSequenceWeakener]: Weakened 267 states. On average, predicates are now at 73.34% of their original sizes. [2018-10-25 01:33:33,496 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:33:33,828 INFO L413 sIntCurrentIteration]: We have 269 unified AI predicates [2018-10-25 01:33:33,829 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:33:33,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:33:33,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-25 01:33:33,829 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:33:33,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-25 01:33:33,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-25 01:33:33,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:33:33,831 INFO L87 Difference]: Start difference. First operand 3112 states and 4245 transitions. Second operand 10 states. [2018-10-25 01:34:09,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-25 01:34:09,313 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger: modulus not positive at java.math.BigInteger.mod(BigInteger.java:2458) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:154) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:100) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:78) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleAssumeStatement(NonrelationalStatementProcessor.java:363) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:160) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:142) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:128) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:362) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:353) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:305) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:537) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalTransitionWithValidState(AbsIntHoareTripleChecker.java:352) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalAbsInt(AbsIntHoareTripleChecker.java:249) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternal(AbsIntHoareTripleChecker.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:72) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-25 01:34:09,318 INFO L168 Benchmark]: Toolchain (without parser) took 171649.77 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 666.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:09,320 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 01:34:09,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 901.09 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:09,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 312.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -866.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:09,322 INFO L168 Benchmark]: Boogie Preprocessor took 165.73 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 01:34:09,323 INFO L168 Benchmark]: RCFGBuilder took 4961.85 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: 174.2 MB). Peak memory consumption was 174.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:09,324 INFO L168 Benchmark]: TraceAbstraction took 165303.93 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 522.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:09,333 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 901.09 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 312.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -866.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.73 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 4961.85 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: 174.2 MB). Peak memory consumption was 174.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 165303.93 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 522.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger: modulus not positive de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger: modulus not positive: java.math.BigInteger.mod(BigInteger.java:2458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...