java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:36:24,281 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:36:24,283 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:36:24,303 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:36:24,303 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:36:24,304 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:36:24,306 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:36:24,308 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:36:24,309 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:36:24,310 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:36:24,311 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:36:24,311 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:36:24,312 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:36:24,313 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:36:24,315 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:36:24,316 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:36:24,316 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:36:24,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:36:24,321 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:36:24,322 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:36:24,323 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:36:24,325 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:36:24,327 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:36:24,334 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:36:24,334 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:36:24,336 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:36:24,337 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:36:24,337 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:36:24,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:36:24,362 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:36:24,363 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:36:24,364 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:36:24,364 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:36:24,364 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:36:24,364 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:36:24,365 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:36:24,365 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:36:24,365 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:36:24,365 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:36:24,365 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:36:24,366 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:36:24,366 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:36:24,366 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:36:24,367 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:36:24,367 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:36:24,367 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:36:24,367 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:36:24,367 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:36:24,368 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:36:24,368 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:36:24,368 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:36:24,368 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:36:24,368 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:36:24,369 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:36:24,369 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:36:24,369 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:36:24,369 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:36:24,369 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:36:24,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:36:24,370 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:36:24,370 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:36:24,370 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:36:24,416 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:36:24,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:36:24,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:36:24,435 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:36:24,436 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:36:24,436 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35_true-unreach-call.c [2018-11-07 03:36:24,500 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004997318/67d0f058b0a9409688f36ed085180c8e/FLAG9698a8cfb [2018-11-07 03:36:25,179 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:36:25,180 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label35_true-unreach-call.c [2018-11-07 03:36:25,202 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004997318/67d0f058b0a9409688f36ed085180c8e/FLAG9698a8cfb [2018-11-07 03:36:25,218 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004997318/67d0f058b0a9409688f36ed085180c8e [2018-11-07 03:36:25,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:36:25,232 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:36:25,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:36:25,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:36:25,237 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:36:25,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:36:25" (1/1) ... [2018-11-07 03:36:25,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681df771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:25, skipping insertion in model container [2018-11-07 03:36:25,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:36:25" (1/1) ... [2018-11-07 03:36:25,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:36:25,347 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:36:26,225 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:36:26,230 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:36:26,517 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:36:26,540 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:36:26,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26 WrapperNode [2018-11-07 03:36:26,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:36:26,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:36:26,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:36:26,542 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:36:26,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (1/1) ... [2018-11-07 03:36:26,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (1/1) ... [2018-11-07 03:36:26,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:36:26,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:36:26,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:36:26,780 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:36:26,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (1/1) ... [2018-11-07 03:36:26,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (1/1) ... [2018-11-07 03:36:26,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (1/1) ... [2018-11-07 03:36:26,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (1/1) ... [2018-11-07 03:36:26,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (1/1) ... [2018-11-07 03:36:26,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (1/1) ... [2018-11-07 03:36:26,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (1/1) ... [2018-11-07 03:36:26,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:36:26,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:36:26,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:36:26,966 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:36:26,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 03:36:27,043 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:36:27,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:36:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:36:27,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:36:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:36:27,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:36:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:36:27,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:36:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:36:27,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:36:27,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:36:33,743 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:36:33,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:36:33 BoogieIcfgContainer [2018-11-07 03:36:33,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:36:33,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:36:33,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:36:33,753 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:36:33,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:36:25" (1/3) ... [2018-11-07 03:36:33,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a38a567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:36:33, skipping insertion in model container [2018-11-07 03:36:33,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:36:26" (2/3) ... [2018-11-07 03:36:33,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a38a567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:36:33, skipping insertion in model container [2018-11-07 03:36:33,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:36:33" (3/3) ... [2018-11-07 03:36:33,758 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label35_true-unreach-call.c [2018-11-07 03:36:33,770 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:36:33,781 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:36:33,798 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:36:33,840 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:36:33,841 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:36:33,841 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:36:33,841 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:36:33,841 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:36:33,841 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:36:33,842 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:36:33,842 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:36:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 03:36:33,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-07 03:36:33,895 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:36:33,897 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] [2018-11-07 03:36:33,899 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:36:33,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:36:33,906 INFO L82 PathProgramCache]: Analyzing trace with hash -524388215, now seen corresponding path program 1 times [2018-11-07 03:36:33,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:36:33,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:36:33,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:36:33,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:36:33,955 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:36:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:36:34,416 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 03:36:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:36:34,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:36:34,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:36:34,439 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:36:34,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:36:34,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:36:34,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:36:34,467 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 03:36:41,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:36:41,740 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 03:36:41,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:36:41,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-11-07 03:36:41,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:36:41,770 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 03:36:41,770 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 03:36:41,780 INFO L604 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 [2018-11-07 03:36:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 03:36:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-07 03:36:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-07 03:36:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-07 03:36:41,899 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 43 [2018-11-07 03:36:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:36:41,899 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-07 03:36:41,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:36:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-07 03:36:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 03:36:41,906 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:36:41,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:36:41,907 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:36:41,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:36:41,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1605428579, now seen corresponding path program 1 times [2018-11-07 03:36:41,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:36:41,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:36:41,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:36:41,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:36:41,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:36:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:36:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:36:42,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:36:42,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:36:42,220 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:36:42,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:36:42,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:36:42,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:36:42,224 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-11-07 03:36:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:36:47,248 INFO L93 Difference]: Finished difference Result 2759 states and 5140 transitions. [2018-11-07 03:36:47,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:36:47,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-11-07 03:36:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:36:47,265 INFO L225 Difference]: With dead ends: 2759 [2018-11-07 03:36:47,265 INFO L226 Difference]: Without dead ends: 2006 [2018-11-07 03:36:47,274 INFO L604 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 [2018-11-07 03:36:47,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2018-11-07 03:36:47,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 2003. [2018-11-07 03:36:47,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2003 states. [2018-11-07 03:36:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3223 transitions. [2018-11-07 03:36:47,385 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3223 transitions. Word has length 113 [2018-11-07 03:36:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:36:47,386 INFO L480 AbstractCegarLoop]: Abstraction has 2003 states and 3223 transitions. [2018-11-07 03:36:47,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:36:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3223 transitions. [2018-11-07 03:36:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 03:36:47,398 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:36:47,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:36:47,400 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:36:47,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:36:47,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1328217001, now seen corresponding path program 1 times [2018-11-07 03:36:47,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:36:47,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:36:47,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:36:47,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:36:47,402 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:36:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:36:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:36:47,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:36:47,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:36:47,663 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:36:47,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:36:47,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:36:47,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:36:47,665 INFO L87 Difference]: Start difference. First operand 2003 states and 3223 transitions. Second operand 5 states. [2018-11-07 03:36:52,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:36:52,719 INFO L93 Difference]: Finished difference Result 6012 states and 9860 transitions. [2018-11-07 03:36:52,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:36:52,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-11-07 03:36:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:36:52,748 INFO L225 Difference]: With dead ends: 6012 [2018-11-07 03:36:52,749 INFO L226 Difference]: Without dead ends: 4015 [2018-11-07 03:36:52,762 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:36:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2018-11-07 03:36:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 3959. [2018-11-07 03:36:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3959 states. [2018-11-07 03:36:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3959 states to 3959 states and 5702 transitions. [2018-11-07 03:36:52,907 INFO L78 Accepts]: Start accepts. Automaton has 3959 states and 5702 transitions. Word has length 130 [2018-11-07 03:36:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:36:52,908 INFO L480 AbstractCegarLoop]: Abstraction has 3959 states and 5702 transitions. [2018-11-07 03:36:52,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:36:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3959 states and 5702 transitions. [2018-11-07 03:36:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-11-07 03:36:52,924 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:36:52,925 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:36:52,925 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:36:52,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:36:52,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1256486234, now seen corresponding path program 1 times [2018-11-07 03:36:52,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:36:52,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:36:52,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:36:52,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:36:52,930 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:36:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:36:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 03:36:53,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:36:53,582 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:36:53,584 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 413 with the following transitions: [2018-11-07 03:36:53,586 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [648], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:36:53,673 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:36:53,674 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:36:55,546 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:36:59,214 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:36:59,216 INFO L272 AbstractInterpreter]: Visited 207 different actions 207 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:36:59,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:36:59,256 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:37:02,982 INFO L227 lantSequenceWeakener]: Weakened 401 states. On average, predicates are now at 77.62% of their original sizes. [2018-11-07 03:37:02,983 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:37:03,639 INFO L415 sIntCurrentIteration]: We unified 411 AI predicates to 411 [2018-11-07 03:37:03,639 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:37:03,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:37:03,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 03:37:03,641 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:37:03,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:37:03,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:37:03,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:37:03,644 INFO L87 Difference]: Start difference. First operand 3959 states and 5702 transitions. Second operand 8 states. [2018-11-07 03:38:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:38:07,906 INFO L93 Difference]: Finished difference Result 8222 states and 11736 transitions. [2018-11-07 03:38:07,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:38:07,906 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 412 [2018-11-07 03:38:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:38:07,929 INFO L225 Difference]: With dead ends: 8222 [2018-11-07 03:38:07,929 INFO L226 Difference]: Without dead ends: 4269 [2018-11-07 03:38:07,950 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 413 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:38:07,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2018-11-07 03:38:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 4267. [2018-11-07 03:38:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4267 states. [2018-11-07 03:38:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 6019 transitions. [2018-11-07 03:38:08,057 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 6019 transitions. Word has length 412 [2018-11-07 03:38:08,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:38:08,058 INFO L480 AbstractCegarLoop]: Abstraction has 4267 states and 6019 transitions. [2018-11-07 03:38:08,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 03:38:08,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 6019 transitions. [2018-11-07 03:38:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-11-07 03:38:08,073 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:38:08,074 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:38:08,074 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:38:08,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:38:08,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1332166065, now seen corresponding path program 1 times [2018-11-07 03:38:08,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:38:08,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:08,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:38:08,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:08,076 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:38:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:38:08,574 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:38:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 189 proven. 86 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 03:38:09,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:38:09,399 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:38:09,399 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 487 with the following transitions: [2018-11-07 03:38:09,400 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [648], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:38:09,412 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:38:09,412 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:38:11,160 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:38:40,563 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:38:40,563 INFO L272 AbstractInterpreter]: Visited 284 different actions 839 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:38:40,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:38:40,575 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:38:45,268 INFO L227 lantSequenceWeakener]: Weakened 88 states. On average, predicates are now at 79.12% of their original sizes. [2018-11-07 03:38:45,268 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:38:59,972 INFO L415 sIntCurrentIteration]: We unified 485 AI predicates to 485 [2018-11-07 03:38:59,973 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:38:59,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:38:59,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [8] total 30 [2018-11-07 03:38:59,973 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:38:59,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 03:38:59,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 03:38:59,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2018-11-07 03:38:59,975 INFO L87 Difference]: Start difference. First operand 4267 states and 6019 transitions. Second operand 24 states. Received shutdown request... [2018-11-07 03:40:10,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:40:10,946 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:40:10,952 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:40:10,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:40:10 BoogieIcfgContainer [2018-11-07 03:40:10,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:40:10,954 INFO L168 Benchmark]: Toolchain (without parser) took 225723.29 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 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 814.7 MB. Max. memory is 7.1 GB. [2018-11-07 03:40:10,955 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-11-07 03:40:10,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1308.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:40:10,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 237.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -912.7 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:40:10,958 INFO L168 Benchmark]: Boogie Preprocessor took 186.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:40:10,958 INFO L168 Benchmark]: RCFGBuilder took 6780.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.9 MB). Peak memory consumption was 288.9 MB. Max. memory is 7.1 GB. [2018-11-07 03:40:10,959 INFO L168 Benchmark]: TraceAbstraction took 217205.41 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 535.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:40:10,965 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1308.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 237.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -912.7 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 186.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6780.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.9 MB). Peak memory consumption was 288.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217205.41 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 535.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 115). Cancelled while BasicCegarLoop was constructing difference of abstraction (4267states) and FLOYD_HOARE automaton (currently 10 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (166 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 217.1s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 152.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1213 SDtfs, 4187 SDslu, 934 SDs, 0 SdLazy, 7772 SolverSat, 1495 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 924 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4267occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9970824437111799 AbsIntWeakeningRatio, 0.07142857142857142 AbsIntAvgWeakeningVarsNumRemoved, 482.4453125 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 416 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1184 NumberOfCodeBlocks, 1184 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1179 ConstructedInterpolants, 0 QuantifiedInterpolants, 1909430 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 698/786 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown