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/Problem14_label32_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:27:05,556 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:27:05,558 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:27:05,573 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:27:05,573 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:27:05,574 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:27:05,576 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:27:05,583 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:27:05,587 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:27:05,588 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:27:05,589 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:27:05,590 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:27:05,591 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:27:05,594 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:27:05,597 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:27:05,598 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:27:05,599 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:27:05,607 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:27:05,609 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:27:05,614 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:27:05,615 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:27:05,621 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:27:05,624 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:27:05,636 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 03:27:05,660 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:27:05,663 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:27:05,664 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:27:05,664 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:27:05,665 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:27:05,665 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:27:05,665 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:27:05,665 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:27:05,665 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:27:05,666 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:27:05,666 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:27:05,666 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:27:05,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:27:05,667 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:27:05,667 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:27:05,668 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:27:05,668 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:27:05,668 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:27:05,668 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:27:05,668 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:27:05,669 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:27:05,669 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:27:05,669 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:27:05,669 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:27:05,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:27:05,671 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:27:05,672 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:27:05,672 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:27:05,672 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:27:05,672 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:27:05,672 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:27:05,673 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:27:05,674 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:27:05,674 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:27:05,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:27:05,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:27:05,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:27:05,773 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:27:05,773 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:27:05,774 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label32_true-unreach-call_false-termination.c [2018-11-07 03:27:05,846 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7504a2b31/a2d175ad16fd4a91a990f93a5b213f89/FLAG92042040d [2018-11-07 03:27:06,412 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:27:06,413 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label32_true-unreach-call_false-termination.c [2018-11-07 03:27:06,434 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7504a2b31/a2d175ad16fd4a91a990f93a5b213f89/FLAG92042040d [2018-11-07 03:27:06,453 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7504a2b31/a2d175ad16fd4a91a990f93a5b213f89 [2018-11-07 03:27:06,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:27:06,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:27:06,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:27:06,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:27:06,474 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:27:06,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:27:06" (1/1) ... [2018-11-07 03:27:06,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ef60d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:06, skipping insertion in model container [2018-11-07 03:27:06,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:27:06" (1/1) ... [2018-11-07 03:27:06,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:27:06,575 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:27:07,089 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:27:07,094 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:27:07,270 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:27:07,292 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:27:07,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07 WrapperNode [2018-11-07 03:27:07,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:27:07,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:27:07,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:27:07,294 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:27:07,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (1/1) ... [2018-11-07 03:27:07,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (1/1) ... [2018-11-07 03:27:07,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:27:07,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:27:07,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:27:07,460 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:27:07,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (1/1) ... [2018-11-07 03:27:07,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (1/1) ... [2018-11-07 03:27:07,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (1/1) ... [2018-11-07 03:27:07,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (1/1) ... [2018-11-07 03:27:07,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (1/1) ... [2018-11-07 03:27:07,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (1/1) ... [2018-11-07 03:27:07,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (1/1) ... [2018-11-07 03:27:07,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:27:07,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:27:07,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:27:07,567 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:27:07,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (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 03:27:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:27:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:27:07,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:27:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:27:07,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:27:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:27:07,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:27:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:27:07,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:27:11,164 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:27:11,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:27:11 BoogieIcfgContainer [2018-11-07 03:27:11,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:27:11,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:27:11,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:27:11,170 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:27:11,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:27:06" (1/3) ... [2018-11-07 03:27:11,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b1a1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:27:11, skipping insertion in model container [2018-11-07 03:27:11,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:27:07" (2/3) ... [2018-11-07 03:27:11,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b1a1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:27:11, skipping insertion in model container [2018-11-07 03:27:11,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:27:11" (3/3) ... [2018-11-07 03:27:11,174 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label32_true-unreach-call_false-termination.c [2018-11-07 03:27:11,184 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:27:11,194 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:27:11,212 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:27:11,251 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:27:11,252 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:27:11,252 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:27:11,252 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:27:11,252 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:27:11,253 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:27:11,253 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:27:11,253 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:27:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 03:27:11,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-07 03:27:11,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:27:11,293 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:27:11,295 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:27:11,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:27:11,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1019361724, now seen corresponding path program 1 times [2018-11-07 03:27:11,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:27:11,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:27:11,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:27:11,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:27:11,348 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:27:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:27:11,797 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 03:27:11,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:27:11,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:27:11,800 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:27:11,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:27:11,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:27:11,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:27:11,825 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 03:27:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:27:14,955 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 03:27:14,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:27:14,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-11-07 03:27:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:27:14,981 INFO L225 Difference]: With dead ends: 894 [2018-11-07 03:27:14,982 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 03:27:14,991 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 03:27:15,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 03:27:15,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 03:27:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 03:27:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-11-07 03:27:15,103 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 62 [2018-11-07 03:27:15,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:27:15,104 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-11-07 03:27:15,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:27:15,104 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-11-07 03:27:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 03:27:15,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:27:15,117 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:27:15,117 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:27:15,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:27:15,118 INFO L82 PathProgramCache]: Analyzing trace with hash 585274651, now seen corresponding path program 1 times [2018-11-07 03:27:15,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:27:15,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:27:15,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:27:15,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:27:15,120 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:27:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:27:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:27:15,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:27:15,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:27:15,420 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:27:15,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:27:15,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:27:15,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:27:15,424 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-11-07 03:27:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:27:18,424 INFO L93 Difference]: Finished difference Result 2170 states and 3490 transitions. [2018-11-07 03:27:18,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:27:18,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2018-11-07 03:27:18,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:27:18,439 INFO L225 Difference]: With dead ends: 2170 [2018-11-07 03:27:18,439 INFO L226 Difference]: Without dead ends: 1543 [2018-11-07 03:27:18,445 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:27:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2018-11-07 03:27:18,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2018-11-07 03:27:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2018-11-07 03:27:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2271 transitions. [2018-11-07 03:27:18,529 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2271 transitions. Word has length 175 [2018-11-07 03:27:18,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:27:18,530 INFO L480 AbstractCegarLoop]: Abstraction has 1543 states and 2271 transitions. [2018-11-07 03:27:18,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:27:18,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2271 transitions. [2018-11-07 03:27:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-07 03:27:18,547 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:27:18,547 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:18,548 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:27:18,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:27:18,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2093465648, now seen corresponding path program 1 times [2018-11-07 03:27:18,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:27:18,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:27:18,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:27:18,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:27:18,550 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:27:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:27:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 132 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:27:19,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:27:19,060 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:27:19,061 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-11-07 03:27:19,063 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:27:19,142 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:27:19,143 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:27:21,861 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:27:24,919 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:27:24,921 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:27:24,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:27:24,963 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:27:27,782 INFO L227 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 78.18% of their original sizes. [2018-11-07 03:27:27,783 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:27:28,215 INFO L415 sIntCurrentIteration]: We unified 249 AI predicates to 249 [2018-11-07 03:27:28,215 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:27:28,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:27:28,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2018-11-07 03:27:28,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:27:28,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:27:28,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:27:28,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:27:28,218 INFO L87 Difference]: Start difference. First operand 1543 states and 2271 transitions. Second operand 7 states. [2018-11-07 03:27:51,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:27:51,040 INFO L93 Difference]: Finished difference Result 3265 states and 4776 transitions. [2018-11-07 03:27:51,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:27:51,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2018-11-07 03:27:51,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:27:51,050 INFO L225 Difference]: With dead ends: 3265 [2018-11-07 03:27:51,050 INFO L226 Difference]: Without dead ends: 1728 [2018-11-07 03:27:51,055 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:27:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2018-11-07 03:27:51,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2018-11-07 03:27:51,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2018-11-07 03:27:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2461 transitions. [2018-11-07 03:27:51,106 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2461 transitions. Word has length 250 [2018-11-07 03:27:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:27:51,106 INFO L480 AbstractCegarLoop]: Abstraction has 1726 states and 2461 transitions. [2018-11-07 03:27:51,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:27:51,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2461 transitions. [2018-11-07 03:27:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-11-07 03:27:51,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:27:51,116 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, 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, 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] [2018-11-07 03:27:51,117 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:27:51,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:27:51,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2144924513, now seen corresponding path program 1 times [2018-11-07 03:27:51,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:27:51,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:27:51,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:27:51,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:27:51,119 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:27:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:27:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 253 proven. 142 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:27:51,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:27:51,967 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:27:51,968 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-11-07 03:27:51,968 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:27:51,975 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:27:51,975 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:27:54,166 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:27:58,776 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:27:58,776 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:27:58,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:27:58,796 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:28:01,602 INFO L227 lantSequenceWeakener]: Weakened 118 states. On average, predicates are now at 78.04% of their original sizes. [2018-11-07 03:28:01,603 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:28:22,381 INFO L415 sIntCurrentIteration]: We unified 334 AI predicates to 334 [2018-11-07 03:28:22,382 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:28:22,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:28:22,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-11-07 03:28:22,382 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:28:22,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 03:28:22,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 03:28:22,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-11-07 03:28:22,384 INFO L87 Difference]: Start difference. First operand 1726 states and 2461 transitions. Second operand 18 states. [2018-11-07 03:30:46,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:30:46,392 INFO L93 Difference]: Finished difference Result 4013 states and 5642 transitions. [2018-11-07 03:30:46,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 03:30:46,392 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 335 [2018-11-07 03:30:46,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:30:46,405 INFO L225 Difference]: With dead ends: 4013 [2018-11-07 03:30:46,405 INFO L226 Difference]: Without dead ends: 2476 [2018-11-07 03:30:46,411 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 340 GetRequests, 298 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2018-11-07 03:30:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2018-11-07 03:30:46,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2259. [2018-11-07 03:30:46,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2259 states. [2018-11-07 03:30:46,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3019 transitions. [2018-11-07 03:30:46,560 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3019 transitions. Word has length 335 [2018-11-07 03:30:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:30:46,561 INFO L480 AbstractCegarLoop]: Abstraction has 2259 states and 3019 transitions. [2018-11-07 03:30:46,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 03:30:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3019 transitions. [2018-11-07 03:30:46,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-11-07 03:30:46,571 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:30:46,572 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:30:46,572 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:30:46,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:30:46,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1746465803, now seen corresponding path program 1 times [2018-11-07 03:30:46,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:30:46,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:30:46,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:30:46,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:30:46,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:30:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:30:47,090 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 03:30:47,279 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 03:30:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 178 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:30:48,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:30:48,072 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:30:48,072 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 362 with the following transitions: [2018-11-07 03:30:48,073 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:30:48,077 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:30:48,078 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:30:50,974 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:30:57,836 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:30:57,836 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:30:57,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:30:57,844 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:31:00,853 INFO L227 lantSequenceWeakener]: Weakened 125 states. On average, predicates are now at 79.26% of their original sizes. [2018-11-07 03:31:00,853 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 03:31:12,955 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:31:12,960 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:31:12,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:31:12 BoogieIcfgContainer [2018-11-07 03:31:12,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:31:12,962 INFO L168 Benchmark]: Toolchain (without parser) took 246494.62 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -343.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 03:31:12,963 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:31:12,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 823.49 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:31:12,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 165.84 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:31:12,966 INFO L168 Benchmark]: Boogie Preprocessor took 106.56 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:31:12,966 INFO L168 Benchmark]: RCFGBuilder took 3598.34 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 122.1 MB). Peak memory consumption was 122.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:31:12,967 INFO L168 Benchmark]: TraceAbstraction took 241794.87 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 292.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 03:31:12,972 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 823.49 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 165.84 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.56 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3598.34 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 122.1 MB). Peak memory consumption was 122.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241794.87 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 292.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was analyzing trace of length 362 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 241.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 173.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 798 SDtfs, 4347 SDslu, 638 SDs, 0 SdLazy, 5673 SolverSat, 913 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 601 GetRequests, 549 SyntacticMatches, 20 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2259occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.5s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.995886931931701 AbsIntWeakeningRatio, 0.09544008483563096 AbsIntAvgWeakeningVarsNumRemoved, 423.9406150583245 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 219 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 822 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 818 ConstructedInterpolants, 0 QuantifiedInterpolants, 2035572 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 445/640 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown