java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:54:56,583 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:54:56,585 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:54:56,599 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:54:56,600 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:54:56,601 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:54:56,603 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:54:56,605 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:54:56,608 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:54:56,608 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:54:56,611 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:54:56,611 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:54:56,612 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:54:56,615 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:54:56,618 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:54:56,625 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:54:56,626 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:54:56,630 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:54:56,632 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:54:56,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:54:56,634 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:54:56,635 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:54:56,639 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 00:54:56,648 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 00:54:56,648 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 00:54:56,649 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 00:54:56,651 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 00:54:56,651 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 00:54:56,683 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:54:56,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:54:56,684 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:54:56,684 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:54:56,686 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:54:56,687 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:54:56,687 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:54:56,687 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:54:56,687 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:54:56,688 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:54:56,688 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:54:56,688 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:54:56,689 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:54:56,689 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:54:56,690 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:54:56,691 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:54:56,691 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:54:56,691 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:54:56,691 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:54:56,691 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:54:56,692 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:54:56,692 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:54:56,692 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:54:56,692 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:54:56,692 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:54:56,694 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:54:56,694 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:54:56,695 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:54:56,695 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:54:56,695 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:54:56,695 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:54:56,696 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:54:56,696 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:54:56,696 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:54:56,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:54:56,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:54:56,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:54:56,783 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:54:56,783 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:54:56,784 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31_true-unreach-call.c [2018-10-24 00:54:56,852 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b8e3d9d4/56892e7673ea4425a2879539b91ae492/FLAG33e1ed594 [2018-10-24 00:54:57,454 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:54:57,456 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label31_true-unreach-call.c [2018-10-24 00:54:57,473 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b8e3d9d4/56892e7673ea4425a2879539b91ae492/FLAG33e1ed594 [2018-10-24 00:54:57,496 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b8e3d9d4/56892e7673ea4425a2879539b91ae492 [2018-10-24 00:54:57,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:54:57,511 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:54:57,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:54:57,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:54:57,517 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:54:57,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:54:57" (1/1) ... [2018-10-24 00:54:57,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436ba03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:57, skipping insertion in model container [2018-10-24 00:54:57,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:54:57" (1/1) ... [2018-10-24 00:54:57,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:54:57,608 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:54:58,143 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:54:58,148 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:54:58,288 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:54:58,306 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:54:58,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58 WrapperNode [2018-10-24 00:54:58,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:54:58,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:54:58,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:54:58,308 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:54:58,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (1/1) ... [2018-10-24 00:54:58,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (1/1) ... [2018-10-24 00:54:58,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:54:58,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:54:58,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:54:58,529 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:54:58,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (1/1) ... [2018-10-24 00:54:58,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (1/1) ... [2018-10-24 00:54:58,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (1/1) ... [2018-10-24 00:54:58,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (1/1) ... [2018-10-24 00:54:58,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (1/1) ... [2018-10-24 00:54:58,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (1/1) ... [2018-10-24 00:54:58,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (1/1) ... [2018-10-24 00:54:58,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:54:58,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:54:58,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:54:58,619 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:54:58,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:54:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:54:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:54:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:54:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:54:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:54:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:54:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:54:58,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:55:02,346 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:55:02,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:55:02 BoogieIcfgContainer [2018-10-24 00:55:02,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:55:02,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:55:02,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:55:02,355 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:55:02,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:54:57" (1/3) ... [2018-10-24 00:55:02,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7c427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:55:02, skipping insertion in model container [2018-10-24 00:55:02,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:54:58" (2/3) ... [2018-10-24 00:55:02,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7c427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:55:02, skipping insertion in model container [2018-10-24 00:55:02,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:55:02" (3/3) ... [2018-10-24 00:55:02,362 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label31_true-unreach-call.c [2018-10-24 00:55:02,375 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:55:02,388 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:55:02,408 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:55:02,446 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:55:02,447 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:55:02,447 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:55:02,447 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:55:02,447 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:55:02,447 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:55:02,448 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:55:02,448 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:55:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:55:02,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 00:55:02,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:55:02,487 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] [2018-10-24 00:55:02,490 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:55:02,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:55:02,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1318273196, now seen corresponding path program 1 times [2018-10-24 00:55:02,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:55:02,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:55:02,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:55:02,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:55:02,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:55:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:55:02,916 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:55:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:55:03,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:55:03,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 00:55:03,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:55:03,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 00:55:03,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 00:55:03,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 00:55:03,043 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 00:55:04,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:55:04,786 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 00:55:04,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 00:55:04,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-10-24 00:55:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:55:04,817 INFO L225 Difference]: With dead ends: 574 [2018-10-24 00:55:04,817 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 00:55:04,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 00:55:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 00:55:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 00:55:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 00:55:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 612 transitions. [2018-10-24 00:55:04,906 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 612 transitions. Word has length 50 [2018-10-24 00:55:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:55:04,907 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 612 transitions. [2018-10-24 00:55:04,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 00:55:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 612 transitions. [2018-10-24 00:55:04,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 00:55:04,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:55:04,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:55:04,916 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:55:04,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:55:04,917 INFO L82 PathProgramCache]: Analyzing trace with hash -990709140, now seen corresponding path program 1 times [2018-10-24 00:55:04,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:55:04,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:55:04,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:55:04,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:55:04,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:55:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:55:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 00:55:05,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:55:05,316 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:55:05,318 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2018-10-24 00:55:05,320 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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [526], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:55:05,399 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:55:05,400 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:55:08,054 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:55:08,136 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:55:08,138 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 00:55:08,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:55:08,166 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:55:10,359 INFO L232 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 74.47% of their original sizes. [2018-10-24 00:55:10,359 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:55:12,758 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:55:12,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:55:12,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-24 00:55:12,760 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:55:12,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 00:55:12,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 00:55:12,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 00:55:12,763 INFO L87 Difference]: Start difference. First operand 356 states and 612 transitions. Second operand 10 states. [2018-10-24 00:56:19,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:56:19,212 INFO L93 Difference]: Finished difference Result 855 states and 1493 transitions. [2018-10-24 00:56:19,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 00:56:19,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2018-10-24 00:56:19,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:56:19,217 INFO L225 Difference]: With dead ends: 855 [2018-10-24 00:56:19,218 INFO L226 Difference]: Without dead ends: 505 [2018-10-24 00:56:19,220 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 131 GetRequests, 112 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-24 00:56:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-10-24 00:56:19,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 500. [2018-10-24 00:56:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2018-10-24 00:56:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 762 transitions. [2018-10-24 00:56:19,276 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 762 transitions. Word has length 128 [2018-10-24 00:56:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:56:19,276 INFO L481 AbstractCegarLoop]: Abstraction has 500 states and 762 transitions. [2018-10-24 00:56:19,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 00:56:19,277 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 762 transitions. [2018-10-24 00:56:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-24 00:56:19,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:56:19,282 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, 2, 2, 2, 2, 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] [2018-10-24 00:56:19,282 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:56:19,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:19,283 INFO L82 PathProgramCache]: Analyzing trace with hash 847052891, now seen corresponding path program 1 times [2018-10-24 00:56:19,283 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:56:19,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:19,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:56:19,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:19,285 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:56:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:56:19,619 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:56:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-24 00:56:19,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:56:19,914 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:56:19,914 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-24 00:56:19,914 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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [526], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:56:19,919 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:56:19,919 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:56:21,355 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:56:33,613 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:56:33,614 INFO L272 AbstractInterpreter]: Visited 86 different actions 486 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 00:56:33,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:33,623 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:56:35,935 INFO L232 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 74.47% of their original sizes. [2018-10-24 00:56:35,935 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:56:44,033 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:56:44,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:56:44,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 19 [2018-10-24 00:56:44,034 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:56:44,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 00:56:44,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 00:56:44,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-10-24 00:56:44,035 INFO L87 Difference]: Start difference. First operand 500 states and 762 transitions. Second operand 17 states. [2018-10-24 00:58:46,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:58:46,800 INFO L93 Difference]: Finished difference Result 1309 states and 2219 transitions. [2018-10-24 00:58:46,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 00:58:46,800 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 199 [2018-10-24 00:58:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:58:46,807 INFO L225 Difference]: With dead ends: 1309 [2018-10-24 00:58:46,807 INFO L226 Difference]: Without dead ends: 959 [2018-10-24 00:58:46,809 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 206 GetRequests, 176 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2018-10-24 00:58:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2018-10-24 00:58:46,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 872. [2018-10-24 00:58:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2018-10-24 00:58:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1171 transitions. [2018-10-24 00:58:46,901 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1171 transitions. Word has length 199 [2018-10-24 00:58:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:58:46,902 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 1171 transitions. [2018-10-24 00:58:46,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 00:58:46,903 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1171 transitions. [2018-10-24 00:58:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-24 00:58:46,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:58:46,907 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 00:58:46,908 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:58:46,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:58:46,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1376531168, now seen corresponding path program 1 times [2018-10-24 00:58:46,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:58:46,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:46,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:58:46,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:58:46,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:58:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:58:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 87 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-24 00:58:47,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:58:47,247 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:58:47,248 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-10-24 00:58:47,248 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], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [526], [527], [531], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:58:47,252 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:58:47,252 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:58:48,892 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 00:58:54,615 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 00:58:54,615 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 00:58:54,616 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 00:58:54,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:58:54,617 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 00:58:54,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:58:54,628 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 00:58:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:58:54,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 00:58:54,747 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 00:58:54,948 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 00:58:54,949 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 00:58:54,954 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 00:58:54,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:58:54 BoogieIcfgContainer [2018-10-24 00:58:54,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 00:58:54,956 INFO L168 Benchmark]: Toolchain (without parser) took 237445.76 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 528.3 MB. Max. memory is 7.1 GB. [2018-10-24 00:58:54,957 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 00:58:54,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 00:58:54,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.19 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -762.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-24 00:58:54,960 INFO L168 Benchmark]: Boogie Preprocessor took 89.30 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 00:58:54,960 INFO L168 Benchmark]: RCFGBuilder took 3729.04 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 121.5 MB). Peak memory consumption was 121.5 MB. Max. memory is 7.1 GB. [2018-10-24 00:58:54,961 INFO L168 Benchmark]: TraceAbstraction took 232605.74 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 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 436.6 MB. Max. memory is 7.1 GB. [2018-10-24 00:58:54,969 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 794.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 221.19 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -762.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.30 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3729.04 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 121.5 MB). Peak memory consumption was 121.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232605.74 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 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 436.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 133). Cancelled while BasicCegarLoop was analyzing trace of length 209 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 232.5s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 191.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 510 SDtfs, 2150 SDslu, 375 SDs, 0 SdLazy, 2553 SolverSat, 688 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 342 GetRequests, 290 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=872occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.9s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9937904124860646 AbsIntWeakeningRatio, 0.14153846153846153 AbsIntAvgWeakeningVarsNumRemoved, 66.78461538461538 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 92 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 377 NumberOfCodeBlocks, 377 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 191899 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 83/200 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown