java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:52:01,781 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:52:01,784 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:52:01,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:52:01,801 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:52:01,802 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:52:01,803 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:52:01,805 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:52:01,807 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:52:01,807 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:52:01,808 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:52:01,809 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:52:01,809 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:52:01,810 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:52:01,812 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:52:01,812 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:52:01,813 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:52:01,815 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:52:01,817 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:52:01,819 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:52:01,820 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:52:01,821 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:52:01,823 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:52:01,830 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:52:01,830 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:52:01,831 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:52:01,832 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:52:01,832 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:52:01,847 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:52:01,848 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:52:01,848 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:52:01,849 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:52:01,849 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:52:01,850 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:52:01,850 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:52:01,850 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:52:01,850 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:52:01,850 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:52:01,851 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:52:01,851 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:52:01,852 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:52:01,852 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:52:01,852 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:52:01,853 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:52:01,854 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:52:01,854 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:52:01,854 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:52:01,854 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:52:01,855 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:52:01,855 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:52:01,855 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:52:01,855 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:52:01,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:52:01,856 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:52:01,856 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:52:01,856 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:52:01,856 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:52:01,856 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:52:01,857 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:52:01,857 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:52:01,858 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:52:01,858 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:52:01,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:52:01,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:52:01,926 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:52:01,927 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:52:01,928 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:52:01,929 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-11-07 03:52:01,997 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3542a6bac/7c8787c2e65c428888f34ab77508435c/FLAG65d1d4bfc [2018-11-07 03:52:02,693 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:52:02,694 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-11-07 03:52:02,719 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3542a6bac/7c8787c2e65c428888f34ab77508435c/FLAG65d1d4bfc [2018-11-07 03:52:02,735 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3542a6bac/7c8787c2e65c428888f34ab77508435c [2018-11-07 03:52:02,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:52:02,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:52:02,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:52:02,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:52:02,755 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:52:02,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:52:02" (1/1) ... [2018-11-07 03:52:02,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3164a125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:02, skipping insertion in model container [2018-11-07 03:52:02,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:52:02" (1/1) ... [2018-11-07 03:52:02,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:52:02,892 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:52:03,849 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:52:03,854 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:52:04,247 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:52:04,274 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:52:04,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04 WrapperNode [2018-11-07 03:52:04,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:52:04,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:52:04,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:52:04,277 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:52:04,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (1/1) ... [2018-11-07 03:52:04,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (1/1) ... [2018-11-07 03:52:04,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:52:04,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:52:04,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:52:04,598 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:52:04,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (1/1) ... [2018-11-07 03:52:04,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (1/1) ... [2018-11-07 03:52:04,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (1/1) ... [2018-11-07 03:52:04,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (1/1) ... [2018-11-07 03:52:04,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (1/1) ... [2018-11-07 03:52:04,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (1/1) ... [2018-11-07 03:52:04,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (1/1) ... [2018-11-07 03:52:04,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:52:04,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:52:04,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:52:04,821 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:52:04,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:52:04,895 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:52:04,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:52:04,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:52:04,896 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:52:04,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:52:04,896 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:52:04,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:52:04,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:52:04,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:52:04,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:52:04,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:52:11,986 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:52:11,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:52:11 BoogieIcfgContainer [2018-11-07 03:52:11,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:52:11,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:52:11,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:52:11,993 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:52:11,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:52:02" (1/3) ... [2018-11-07 03:52:11,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328d2410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:52:11, skipping insertion in model container [2018-11-07 03:52:11,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:04" (2/3) ... [2018-11-07 03:52:11,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328d2410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:52:11, skipping insertion in model container [2018-11-07 03:52:11,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:52:11" (3/3) ... [2018-11-07 03:52:11,997 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06_true-unreach-call.c [2018-11-07 03:52:12,007 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:52:12,016 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:52:12,033 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:52:12,085 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:52:12,086 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:52:12,086 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:52:12,086 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:52:12,086 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:52:12,086 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:52:12,087 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:52:12,087 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:52:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 03:52:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-07 03:52:12,149 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:52:12,150 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] [2018-11-07 03:52:12,153 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:52:12,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:52:12,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2116554596, now seen corresponding path program 1 times [2018-11-07 03:52:12,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:52:12,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:52:12,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:52:12,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:52:12,212 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:52:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:52:12,716 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 03:52:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:52:12,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:52:12,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:52:12,740 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:52:12,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:52:12,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:52:12,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:52:12,766 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 03:52:21,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:52:21,374 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-11-07 03:52:21,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:52:21,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-11-07 03:52:21,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:52:21,413 INFO L225 Difference]: With dead ends: 2137 [2018-11-07 03:52:21,413 INFO L226 Difference]: Without dead ends: 1527 [2018-11-07 03:52:21,426 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:52:21,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-11-07 03:52:21,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-11-07 03:52:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-11-07 03:52:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-11-07 03:52:21,579 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 38 [2018-11-07 03:52:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:52:21,580 INFO L480 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-11-07 03:52:21,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:52:21,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-11-07 03:52:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-07 03:52:21,586 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:52:21,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:52:21,587 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:52:21,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:52:21,587 INFO L82 PathProgramCache]: Analyzing trace with hash 2036710450, now seen corresponding path program 1 times [2018-11-07 03:52:21,588 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:52:21,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:52:21,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:52:21,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:52:21,589 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:52:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:52:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:52:21,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:52:21,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:52:21,873 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:52:21,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:52:21,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:52:21,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:52:21,876 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-11-07 03:52:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:52:30,010 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-11-07 03:52:30,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:52:30,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-11-07 03:52:30,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:52:30,045 INFO L225 Difference]: With dead ends: 4413 [2018-11-07 03:52:30,045 INFO L226 Difference]: Without dead ends: 2906 [2018-11-07 03:52:30,052 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:52:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-11-07 03:52:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-11-07 03:52:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-11-07 03:52:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-11-07 03:52:30,164 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 110 [2018-11-07 03:52:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:52:30,165 INFO L480 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-11-07 03:52:30,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:52:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-11-07 03:52:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 03:52:30,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:52:30,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:52:30,169 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:52:30,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:52:30,170 INFO L82 PathProgramCache]: Analyzing trace with hash -493194566, now seen corresponding path program 1 times [2018-11-07 03:52:30,170 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:52:30,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:52:30,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:52:30,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:52:30,171 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:52:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:52:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:52:30,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:52:30,589 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:52:30,590 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2018-11-07 03:52:30,593 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 03:52:30,662 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:52:30,662 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:52:32,256 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:52:52,868 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:52:52,870 INFO L272 AbstractInterpreter]: Visited 82 different actions 538 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 03:52:52,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:52:52,885 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:52:54,890 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 83.33% of their original sizes. [2018-11-07 03:52:54,891 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:53:39,512 INFO L415 sIntCurrentIteration]: We unified 112 AI predicates to 112 [2018-11-07 03:53:39,512 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:53:39,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:53:39,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [7] total 26 [2018-11-07 03:53:39,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:53:39,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 03:53:39,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 03:53:39,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2018-11-07 03:53:39,516 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 21 states. Received shutdown request... [2018-11-07 03:56:02,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 03:56:02,507 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:56:02,513 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:56:02,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:56:02 BoogieIcfgContainer [2018-11-07 03:56:02,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:56:02,514 INFO L168 Benchmark]: Toolchain (without parser) took 239765.81 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 201.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:56:02,515 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:56:02,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1524.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:56:02,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 320.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -973.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:56:02,517 INFO L168 Benchmark]: Boogie Preprocessor took 221.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:56:02,518 INFO L168 Benchmark]: RCFGBuilder took 7166.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 463.5 MB). Peak memory consumption was 463.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:56:02,519 INFO L168 Benchmark]: TraceAbstraction took 230524.37 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.9 GB in the end (delta: -2.2 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:56:02,525 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1524.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 320.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -973.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 221.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7166.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 463.5 MB). Peak memory consumption was 463.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230524.37 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.9 GB in the end (delta: -2.2 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 101). Cancelled while BasicCegarLoop was constructing difference of abstraction (2873states) and FLOYD_HOARE automaton (currently 20 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (516 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 230.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 159.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 782 SDtfs, 4082 SDslu, 595 SDs, 0 SdLazy, 6099 SolverSat, 1622 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 28 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 52.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2873occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9920467032967034 AbsIntWeakeningRatio, 0.1875 AbsIntAvgWeakeningVarsNumRemoved, 750.0357142857143 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 47 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 89636 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 31/62 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown