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/Problem15_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:14:57,929 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:14:57,931 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:14:57,945 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:14:57,945 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:14:57,946 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:14:57,948 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:14:57,950 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:14:57,952 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:14:57,953 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:14:57,954 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:14:57,954 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:14:57,956 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:14:57,957 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:14:57,958 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:14:57,959 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:14:57,960 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:14:57,962 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:14:57,964 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:14:57,966 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:14:57,968 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:14:57,969 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:14:57,972 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:14:57,982 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 [2018-10-27 03:14:57,999 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:14:57,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:14:58,000 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:14:58,000 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:14:58,001 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:14:58,001 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:14:58,001 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:14:58,001 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:14:58,001 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:14:58,002 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:14:58,002 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:14:58,002 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:14:58,003 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:14:58,003 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:14:58,003 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:14:58,003 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:14:58,003 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:14:58,004 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:14:58,004 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:14:58,004 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:14:58,004 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:14:58,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:14:58,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:14:58,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:14:58,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:14:58,006 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:14:58,006 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:14:58,006 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:14:58,006 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:14:58,006 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:14:58,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:14:58,007 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:14:58,007 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:14:58,007 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:14:58,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:14:58,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:14:58,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:14:58,081 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:14:58,081 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:14:58,082 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44_true-unreach-call.c [2018-10-27 03:14:58,154 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/783c2178c/a975991e5ccb4371b38995795d9b831d/FLAG52493fe51 [2018-10-27 03:14:58,874 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:14:58,875 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label44_true-unreach-call.c [2018-10-27 03:14:58,894 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/783c2178c/a975991e5ccb4371b38995795d9b831d/FLAG52493fe51 [2018-10-27 03:14:58,910 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/783c2178c/a975991e5ccb4371b38995795d9b831d [2018-10-27 03:14:58,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:14:58,924 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:14:58,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:14:58,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:14:58,930 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:14:58,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:14:58" (1/1) ... [2018-10-27 03:14:58,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd54a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:58, skipping insertion in model container [2018-10-27 03:14:58,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:14:58" (1/1) ... [2018-10-27 03:14:58,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:14:59,043 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:14:59,925 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:14:59,929 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:15:00,229 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:15:00,254 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:15:00,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00 WrapperNode [2018-10-27 03:15:00,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:15:00,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:15:00,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:15:00,257 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:15:00,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (1/1) ... [2018-10-27 03:15:00,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (1/1) ... [2018-10-27 03:15:00,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:15:00,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:15:00,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:15:00,688 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:15:00,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (1/1) ... [2018-10-27 03:15:00,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (1/1) ... [2018-10-27 03:15:00,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (1/1) ... [2018-10-27 03:15:00,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (1/1) ... [2018-10-27 03:15:00,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (1/1) ... [2018-10-27 03:15:00,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (1/1) ... [2018-10-27 03:15:00,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (1/1) ... [2018-10-27 03:15:00,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:15:00,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:15:00,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:15:00,863 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:15:00,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (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 [2018-10-27 03:15:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:15:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:15:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:15:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:15:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:15:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:15:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:15:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:15:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:15:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:15:09,898 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:15:09,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:15:09 BoogieIcfgContainer [2018-10-27 03:15:09,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:15:09,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:15:09,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:15:09,904 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:15:09,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:14:58" (1/3) ... [2018-10-27 03:15:09,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2880f5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:15:09, skipping insertion in model container [2018-10-27 03:15:09,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:15:00" (2/3) ... [2018-10-27 03:15:09,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2880f5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:15:09, skipping insertion in model container [2018-10-27 03:15:09,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:15:09" (3/3) ... [2018-10-27 03:15:09,908 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label44_true-unreach-call.c [2018-10-27 03:15:09,919 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:15:09,928 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:15:09,945 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:15:09,986 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:15:09,987 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:15:09,987 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:15:09,987 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:15:09,987 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:15:09,987 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:15:09,988 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:15:09,988 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:15:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 03:15:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-27 03:15:10,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:15:10,034 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:15:10,036 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:15:10,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:15:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2074557279, now seen corresponding path program 1 times [2018-10-27 03:15:10,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:15:10,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:10,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:15:10,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:10,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:15:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:15:10,665 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 03:15:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:15:10,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:15:10,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:15:10,755 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:15:10,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:15:10,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:15:10,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:15:10,784 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 03:15:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:15:19,083 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-10-27 03:15:19,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:15:19,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-10-27 03:15:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:15:19,111 INFO L225 Difference]: With dead ends: 1501 [2018-10-27 03:15:19,111 INFO L226 Difference]: Without dead ends: 1057 [2018-10-27 03:15:19,123 INFO L605 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 [2018-10-27 03:15:19,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-10-27 03:15:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-10-27 03:15:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 03:15:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-10-27 03:15:19,245 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 73 [2018-10-27 03:15:19,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:15:19,246 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-10-27 03:15:19,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:15:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-10-27 03:15:19,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-27 03:15:19,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:15:19,266 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:15:19,267 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:15:19,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:15:19,269 INFO L82 PathProgramCache]: Analyzing trace with hash -512151083, now seen corresponding path program 1 times [2018-10-27 03:15:19,269 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:15:19,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:19,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:15:19,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:19,273 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:15:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:15:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:15:19,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:15:19,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:15:19,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:15:19,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:15:19,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:15:19,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:15:19,566 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-10-27 03:15:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:15:26,390 INFO L93 Difference]: Finished difference Result 2732 states and 4244 transitions. [2018-10-27 03:15:26,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:15:26,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2018-10-27 03:15:26,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:15:26,410 INFO L225 Difference]: With dead ends: 2732 [2018-10-27 03:15:26,410 INFO L226 Difference]: Without dead ends: 1994 [2018-10-27 03:15:26,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:15:26,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2018-10-27 03:15:26,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1682. [2018-10-27 03:15:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-10-27 03:15:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2410 transitions. [2018-10-27 03:15:26,527 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2410 transitions. Word has length 143 [2018-10-27 03:15:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:15:26,528 INFO L481 AbstractCegarLoop]: Abstraction has 1682 states and 2410 transitions. [2018-10-27 03:15:26,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:15:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2410 transitions. [2018-10-27 03:15:26,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-27 03:15:26,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:15:26,548 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:15:26,549 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:15:26,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:15:26,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1056955347, now seen corresponding path program 1 times [2018-10-27 03:15:26,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:15:26,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:26,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:15:26,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:15:26,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:15:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:15:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 135 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 03:15:27,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:15:27,192 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:15:27,192 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-10-27 03:15:27,195 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [557], [559], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [819], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 03:15:27,263 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:15:27,264 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:15:29,222 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:15:40,549 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:15:40,551 INFO L272 AbstractInterpreter]: Visited 130 different actions 377 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:15:40,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:15:40,564 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:15:44,816 INFO L227 lantSequenceWeakener]: Weakened 66 states. On average, predicates are now at 78.03% of their original sizes. [2018-10-27 03:15:44,816 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:17:15,546 INFO L415 sIntCurrentIteration]: We unified 292 AI predicates to 292 [2018-10-27 03:17:15,546 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:17:15,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:17:15,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 03:17:15,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:17:15,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 03:17:15,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 03:17:15,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2018-10-27 03:17:15,550 INFO L87 Difference]: Start difference. First operand 1682 states and 2410 transitions. Second operand 18 states. Received shutdown request... [2018-10-27 03:19:16,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-27 03:19:16,557 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:19:16,561 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:19:16,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:19:16 BoogieIcfgContainer [2018-10-27 03:19:16,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:19:16,563 INFO L168 Benchmark]: Toolchain (without parser) took 257639.91 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 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,564 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-27 03:19:16,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1330.04 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 430.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.1 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,567 INFO L168 Benchmark]: Boogie Preprocessor took 175.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,568 INFO L168 Benchmark]: RCFGBuilder took 9037.02 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: 319.6 MB). Peak memory consumption was 319.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,568 INFO L168 Benchmark]: TraceAbstraction took 246661.24 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 2.8 GB in the end (delta: -927.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-27 03:19:16,575 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1330.04 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 430.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.1 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 175.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9037.02 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: 319.6 MB). Peak memory consumption was 319.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246661.24 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 2.8 GB in the end (delta: -927.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 205]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 205). Cancelled while BasicCegarLoop was constructing difference of abstraction (1682states) and FLOYD_HOARE automaton (currently 22 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (418 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 246.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 136.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 659 SDtfs, 2638 SDslu, 410 SDs, 0 SdLazy, 4719 SolverSat, 1285 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 316 GetRequests, 196 SyntacticMatches, 87 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 96.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1682occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9961100357355569 AbsIntWeakeningRatio, 0.09246575342465753 AbsIntAvgWeakeningVarsNumRemoved, 170.3527397260274 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 625 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 509 NumberOfCodeBlocks, 509 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 506 ConstructedInterpolants, 0 QuantifiedInterpolants, 500134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 207/294 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown