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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:41:58,595 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:41:58,597 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:41:58,609 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:41:58,610 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:41:58,611 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:41:58,612 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:41:58,614 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:41:58,616 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:41:58,617 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:41:58,618 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:41:58,618 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:41:58,619 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:41:58,620 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:41:58,621 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:41:58,622 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:41:58,623 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:41:58,624 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:41:58,628 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:41:58,632 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:41:58,637 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:41:58,638 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:41:58,643 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:41:58,643 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:41:58,647 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:41:58,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:41:58,649 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:41:58,652 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:41:58,653 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:41:58,654 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:41:58,654 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:41:58,657 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:41:58,657 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:41:58,657 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:41:58,659 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:41:58,659 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:41:58,660 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:41:58,687 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:41:58,687 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:41:58,688 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:41:58,688 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:41:58,690 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:41:58,690 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:41:58,691 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:41:58,691 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:41:58,691 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:41:58,691 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:41:58,691 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:41:58,692 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:41:58,693 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:41:58,694 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:41:58,694 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:41:58,694 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:41:58,694 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:41:58,695 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:41:58,695 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:41:58,695 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:41:58,695 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:41:58,695 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:41:58,696 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:41:58,696 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:41:58,696 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:41:58,696 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:41:58,697 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:41:58,697 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:41:58,697 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:41:58,697 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:41:58,697 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:41:58,698 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:41:58,698 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:41:58,698 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:41:58,698 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:41:58,766 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:41:58,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:41:58,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:41:58,791 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:41:58,792 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:41:58,793 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label22_false-unreach-call.c [2018-11-12 16:41:58,856 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed49391a/daf42ae66ba348eb96471262a9cd3295/FLAG2ece5112f [2018-11-12 16:41:59,582 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:41:59,583 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label22_false-unreach-call.c [2018-11-12 16:41:59,613 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed49391a/daf42ae66ba348eb96471262a9cd3295/FLAG2ece5112f [2018-11-12 16:41:59,636 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed49391a/daf42ae66ba348eb96471262a9cd3295 [2018-11-12 16:41:59,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:41:59,653 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:41:59,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:41:59,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:41:59,661 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:41:59,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:41:59" (1/1) ... [2018-11-12 16:41:59,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75de4e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:41:59, skipping insertion in model container [2018-11-12 16:41:59,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:41:59" (1/1) ... [2018-11-12 16:41:59,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:41:59,775 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:42:00,685 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:42:00,690 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:42:00,945 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:42:00,970 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:42:00,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00 WrapperNode [2018-11-12 16:42:00,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:42:00,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:42:00,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:42:00,973 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:42:00,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (1/1) ... [2018-11-12 16:42:01,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (1/1) ... [2018-11-12 16:42:01,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:42:01,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:42:01,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:42:01,175 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:42:01,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (1/1) ... [2018-11-12 16:42:01,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (1/1) ... [2018-11-12 16:42:01,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (1/1) ... [2018-11-12 16:42:01,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (1/1) ... [2018-11-12 16:42:01,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (1/1) ... [2018-11-12 16:42:01,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (1/1) ... [2018-11-12 16:42:01,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (1/1) ... [2018-11-12 16:42:01,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:42:01,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:42:01,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:42:01,361 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:42:01,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (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 [2018-11-12 16:42:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:42:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:42:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:42:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:42:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:42:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:42:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:42:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:42:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:42:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:42:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:42:07,948 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:42:07,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:42:07 BoogieIcfgContainer [2018-11-12 16:42:07,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:42:07,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:42:07,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:42:07,954 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:42:07,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:41:59" (1/3) ... [2018-11-12 16:42:07,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42477cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:42:07, skipping insertion in model container [2018-11-12 16:42:07,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:42:00" (2/3) ... [2018-11-12 16:42:07,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42477cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:42:07, skipping insertion in model container [2018-11-12 16:42:07,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:42:07" (3/3) ... [2018-11-12 16:42:07,958 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label22_false-unreach-call.c [2018-11-12 16:42:07,968 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:42:07,977 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:42:07,996 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:42:08,038 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:42:08,038 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:42:08,039 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:42:08,039 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:42:08,039 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:42:08,039 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:42:08,039 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:42:08,039 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:42:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:42:08,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-12 16:42:08,080 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:08,081 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] [2018-11-12 16:42:08,083 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:08,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:08,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2015982012, now seen corresponding path program 1 times [2018-11-12 16:42:08,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:08,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:08,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:08,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:08,144 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:08,506 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:42:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:42:08,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:42:08,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:42:08,607 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:42:08,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:42:08,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:42:08,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:42:08,629 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 16:42:12,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:12,054 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 16:42:12,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:42:12,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-12 16:42:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:12,096 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 16:42:12,096 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 16:42:12,105 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:42:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 16:42:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 16:42:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:42:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-12 16:42:12,216 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 20 [2018-11-12 16:42:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:12,216 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-12 16:42:12,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:42:12,217 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-12 16:42:12,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-12 16:42:12,230 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:12,231 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:42:12,231 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:12,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:12,232 INFO L82 PathProgramCache]: Analyzing trace with hash -422584226, now seen corresponding path program 1 times [2018-11-12 16:42:12,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:12,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:12,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:12,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:12,234 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:12,665 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:42:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:42:12,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:42:12,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:42:12,777 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:42:12,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:42:12,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:42:12,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:42:12,780 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-12 16:42:19,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:19,079 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-12 16:42:19,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:42:19,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-11-12 16:42:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:19,093 INFO L225 Difference]: With dead ends: 2183 [2018-11-12 16:42:19,094 INFO L226 Difference]: Without dead ends: 1445 [2018-11-12 16:42:19,100 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:42:19,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-12 16:42:19,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-12 16:42:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-12 16:42:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-12 16:42:19,161 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 128 [2018-11-12 16:42:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:19,162 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-12 16:42:19,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:42:19,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-12 16:42:19,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-12 16:42:19,165 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:19,165 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:42:19,166 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:19,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:19,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1897752243, now seen corresponding path program 1 times [2018-11-12 16:42:19,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:19,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:19,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:19,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:19,168 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:42:19,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:42:19,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:42:19,394 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:42:19,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:42:19,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:42:19,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:42:19,395 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-12 16:42:22,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:22,996 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-12 16:42:23,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:42:23,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-12 16:42:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:23,022 INFO L225 Difference]: With dead ends: 3902 [2018-11-12 16:42:23,023 INFO L226 Difference]: Without dead ends: 2484 [2018-11-12 16:42:23,027 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:42:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-12 16:42:23,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-12 16:42:23,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-12 16:42:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-12 16:42:23,102 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 131 [2018-11-12 16:42:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:23,102 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-12 16:42:23,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:42:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-12 16:42:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-12 16:42:23,108 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:23,109 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:42:23,109 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:23,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:23,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1121354911, now seen corresponding path program 1 times [2018-11-12 16:42:23,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:23,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:23,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:23,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:23,111 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 26 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:42:23,441 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:42:23,441 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:42:23,442 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-11-12 16:42:23,445 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:42:23,512 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:42:23,512 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:42:24,465 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:42:24,467 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Performed 2034 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2034 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:42:24,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:24,501 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:42:25,460 INFO L227 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-12 16:42:25,460 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:42:26,823 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-11-12 16:42:26,823 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:42:26,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:42:26,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 16:42:26,824 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:42:26,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:42:26,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:42:26,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:42:26,826 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-12 16:42:31,805 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:42:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:58,865 INFO L93 Difference]: Finished difference Result 5285 states and 7974 transitions. [2018-11-12 16:42:58,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:42:58,866 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 247 [2018-11-12 16:42:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:58,881 INFO L225 Difference]: With dead ends: 5285 [2018-11-12 16:42:58,881 INFO L226 Difference]: Without dead ends: 2817 [2018-11-12 16:42:58,890 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 195 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:42:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-12 16:42:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2812. [2018-11-12 16:42:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-12 16:42:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-12 16:42:58,958 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 247 [2018-11-12 16:42:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:58,959 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-12 16:42:58,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:42:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-12 16:42:58,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-11-12 16:42:58,965 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:58,966 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:42:58,966 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:58,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:58,967 INFO L82 PathProgramCache]: Analyzing trace with hash 709063263, now seen corresponding path program 1 times [2018-11-12 16:42:58,967 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:58,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:58,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:58,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:58,968 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 134 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-12 16:42:59,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:42:59,569 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:42:59,569 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-11-12 16:42:59,571 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:42:59,579 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:42:59,580 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:42:59,707 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:43:00,223 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:43:00,224 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Performed 6041 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6041 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:43:00,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:00,259 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:43:01,064 INFO L227 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-12 16:43:01,065 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:43:02,163 INFO L415 sIntCurrentIteration]: We unified 338 AI predicates to 338 [2018-11-12 16:43:02,163 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:43:02,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:43:02,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 16:43:02,164 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:43:02,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 16:43:02,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 16:43:02,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:43:02,166 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 23 states. [2018-11-12 16:43:43,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:43,075 INFO L93 Difference]: Finished difference Result 7342 states and 10805 transitions. [2018-11-12 16:43:43,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 16:43:43,075 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 339 [2018-11-12 16:43:43,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:43,098 INFO L225 Difference]: With dead ends: 7342 [2018-11-12 16:43:43,098 INFO L226 Difference]: Without dead ends: 4874 [2018-11-12 16:43:43,109 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 358 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2018-11-12 16:43:43,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2018-11-12 16:43:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4406. [2018-11-12 16:43:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4406 states. [2018-11-12 16:43:43,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 5749 transitions. [2018-11-12 16:43:43,232 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 5749 transitions. Word has length 339 [2018-11-12 16:43:43,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:43,233 INFO L480 AbstractCegarLoop]: Abstraction has 4406 states and 5749 transitions. [2018-11-12 16:43:43,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 16:43:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 5749 transitions. [2018-11-12 16:43:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-11-12 16:43:43,243 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:43,244 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:43:43,244 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:43,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:43,244 INFO L82 PathProgramCache]: Analyzing trace with hash 919764583, now seen corresponding path program 1 times [2018-11-12 16:43:43,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:43,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:43,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:43,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:43,249 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:44,073 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:43:44,524 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:43:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 158 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:43:45,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:45,121 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:43:45,121 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 376 with the following transitions: [2018-11-12 16:43:45,122 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:43:45,126 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:43:45,127 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:43:45,240 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:43:45,630 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:43:45,630 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Performed 7077 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7077 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:43:45,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:45,661 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:43:46,180 INFO L227 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-12 16:43:46,181 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:43:47,139 INFO L415 sIntCurrentIteration]: We unified 374 AI predicates to 374 [2018-11-12 16:43:47,140 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:43:47,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:43:47,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [13] total 33 [2018-11-12 16:43:47,140 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:43:47,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:43:47,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:43:47,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:43:47,142 INFO L87 Difference]: Start difference. First operand 4406 states and 5749 transitions. Second operand 22 states. [2018-11-12 16:44:32,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:32,278 INFO L93 Difference]: Finished difference Result 9178 states and 12540 transitions. [2018-11-12 16:44:32,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 16:44:32,278 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 375 [2018-11-12 16:44:32,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:32,301 INFO L225 Difference]: With dead ends: 9178 [2018-11-12 16:44:32,301 INFO L226 Difference]: Without dead ends: 5983 [2018-11-12 16:44:32,313 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 389 GetRequests, 339 SyntacticMatches, 15 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2018-11-12 16:44:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5983 states. [2018-11-12 16:44:32,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5983 to 5967. [2018-11-12 16:44:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5967 states. [2018-11-12 16:44:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5967 states to 5967 states and 7383 transitions. [2018-11-12 16:44:32,465 INFO L78 Accepts]: Start accepts. Automaton has 5967 states and 7383 transitions. Word has length 375 [2018-11-12 16:44:32,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:32,466 INFO L480 AbstractCegarLoop]: Abstraction has 5967 states and 7383 transitions. [2018-11-12 16:44:32,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 16:44:32,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5967 states and 7383 transitions. [2018-11-12 16:44:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-11-12 16:44:32,482 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:32,483 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:44:32,483 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:32,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:32,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1537867705, now seen corresponding path program 1 times [2018-11-12 16:44:32,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:32,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:32,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:32,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:32,485 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:33,110 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-12 16:44:33,324 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-12 16:44:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 149 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-12 16:44:33,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:44:33,921 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:44:33,922 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 488 with the following transitions: [2018-11-12 16:44:33,922 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:44:33,927 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:44:33,927 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:44:34,568 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:44:34,569 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Performed 8665 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8665 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:44:34,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:34,573 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:44:35,074 INFO L227 lantSequenceWeakener]: Weakened 257 states. On average, predicates are now at 77.54% of their original sizes. [2018-11-12 16:44:35,074 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:44:36,565 INFO L415 sIntCurrentIteration]: We unified 486 AI predicates to 486 [2018-11-12 16:44:36,565 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:44:36,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:44:36,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-11-12 16:44:36,566 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:36,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:44:36,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:44:36,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:44:36,568 INFO L87 Difference]: Start difference. First operand 5967 states and 7383 transitions. Second operand 18 states. [2018-11-12 16:44:38,301 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:44:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:54,125 INFO L93 Difference]: Finished difference Result 10490 states and 13544 transitions. [2018-11-12 16:44:54,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 16:44:54,125 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 487 [2018-11-12 16:44:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:54,151 INFO L225 Difference]: With dead ends: 10490 [2018-11-12 16:44:54,152 INFO L226 Difference]: Without dead ends: 6603 [2018-11-12 16:44:54,163 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 502 GetRequests, 422 SyntacticMatches, 48 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 16:44:54,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2018-11-12 16:44:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6598. [2018-11-12 16:44:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6598 states. [2018-11-12 16:44:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6598 states to 6598 states and 8048 transitions. [2018-11-12 16:44:54,321 INFO L78 Accepts]: Start accepts. Automaton has 6598 states and 8048 transitions. Word has length 487 [2018-11-12 16:44:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:54,322 INFO L480 AbstractCegarLoop]: Abstraction has 6598 states and 8048 transitions. [2018-11-12 16:44:54,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:44:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6598 states and 8048 transitions. [2018-11-12 16:44:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-11-12 16:44:54,340 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:54,340 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:44:54,340 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:54,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:54,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1635361833, now seen corresponding path program 1 times [2018-11-12 16:44:54,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:54,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:54,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:54,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:54,342 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:54,825 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:44:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 45 proven. 260 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 16:44:55,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:44:55,442 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:44:55,443 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 496 with the following transitions: [2018-11-12 16:44:55,445 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:44:55,451 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:44:55,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:44:58,303 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:44:58,304 INFO L272 AbstractInterpreter]: Visited 257 different actions 2516 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Performed 44483 root evaluator evaluations with a maximum evaluation depth of 6. Performed 44483 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:44:58,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:58,312 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:44:59,406 INFO L227 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 78.39% of their original sizes. [2018-11-12 16:44:59,406 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:44:59,751 INFO L415 sIntCurrentIteration]: We unified 494 AI predicates to 494 [2018-11-12 16:44:59,751 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:44:59,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:44:59,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 16:44:59,752 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:59,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:44:59,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:44:59,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:44:59,754 INFO L87 Difference]: Start difference. First operand 6598 states and 8048 transitions. Second operand 22 states. [2018-11-12 16:45:02,061 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:45:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:45:28,670 INFO L93 Difference]: Finished difference Result 11126 states and 14227 transitions. [2018-11-12 16:45:28,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-12 16:45:28,671 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 495 [2018-11-12 16:45:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:45:28,693 INFO L225 Difference]: With dead ends: 11126 [2018-11-12 16:45:28,693 INFO L226 Difference]: Without dead ends: 7239 [2018-11-12 16:45:28,705 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 505 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 16:45:28,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7239 states. [2018-11-12 16:45:28,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7239 to 7231. [2018-11-12 16:45:28,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7231 states. [2018-11-12 16:45:28,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 8726 transitions. [2018-11-12 16:45:28,838 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 8726 transitions. Word has length 495 [2018-11-12 16:45:28,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:45:28,839 INFO L480 AbstractCegarLoop]: Abstraction has 7231 states and 8726 transitions. [2018-11-12 16:45:28,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 16:45:28,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 8726 transitions. [2018-11-12 16:45:28,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-11-12 16:45:28,864 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:45:28,865 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2018-11-12 16:45:28,865 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:45:28,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:28,866 INFO L82 PathProgramCache]: Analyzing trace with hash -2060586171, now seen corresponding path program 1 times [2018-11-12 16:45:28,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:45:28,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:28,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:45:28,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:28,867 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:45:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:45:29,801 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:45:30,112 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:45:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 152 proven. 223 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-11-12 16:45:31,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:45:31,641 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:45:31,641 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 580 with the following transitions: [2018-11-12 16:45:31,642 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] Received shutdown request... [2018-11-12 16:45:31,647 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:45:31,648 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:45:31,648 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 16:45:31,649 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 16:45:31,650 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 16:45:31,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:45:31,650 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:45:31,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:45:31,674 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:45:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:45:31,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:45:31,944 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 16:45:32,145 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:45:32,146 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:45:32,151 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:45:32,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:45:32 BoogieIcfgContainer [2018-11-12 16:45:32,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:45:32,153 INFO L168 Benchmark]: Toolchain (without parser) took 212502.74 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-12 16:45:32,154 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-12 16:45:32,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1316.27 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:45:32,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 202.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -858.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:45:32,158 INFO L168 Benchmark]: Boogie Preprocessor took 185.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:45:32,159 INFO L168 Benchmark]: RCFGBuilder took 6588.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 255.5 MB). Peak memory consumption was 255.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:45:32,159 INFO L168 Benchmark]: TraceAbstraction took 204201.10 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-12 16:45:32,172 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1316.27 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 202.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -858.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 185.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6588.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 255.5 MB). Peak memory consumption was 255.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204201.10 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was analyzing trace of length 580 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 204.1s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 178.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2364 SDtfs, 24133 SDslu, 2046 SDs, 0 SdLazy, 25761 SolverSat, 3953 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.9s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2029 GetRequests, 1753 SyntacticMatches, 110 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1504 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7231occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.8s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.9976382724229012 AbsIntWeakeningRatio, 0.07946336429308566 AbsIntAvgWeakeningVarsNumRemoved, 10.358617131062951 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 533 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2222 NumberOfCodeBlocks, 2222 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2214 ConstructedInterpolants, 0 QuantifiedInterpolants, 5514961 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 919/1628 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown