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/Problem14_label31_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:28:15,757 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:28:15,759 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:28:15,785 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:28:15,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:28:15,787 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:28:15,788 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:28:15,790 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:28:15,792 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:28:15,792 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:28:15,793 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:28:15,794 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:28:15,795 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:28:15,796 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:28:15,797 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:28:15,797 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:28:15,798 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:28:15,800 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:28:15,802 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:28:15,804 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:28:15,805 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:28:15,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:28:15,809 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:28:15,818 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 [2018-10-23 22:28:15,835 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:28:15,835 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:28:15,836 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:28:15,836 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:28:15,838 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:28:15,839 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:28:15,839 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:28:15,839 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:28:15,839 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:28:15,839 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:28:15,840 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:28:15,840 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:28:15,841 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:28:15,841 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:28:15,841 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:28:15,842 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:28:15,843 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:28:15,843 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:28:15,843 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:28:15,843 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:28:15,843 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:28:15,844 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:28:15,844 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:28:15,844 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:28:15,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:28:15,844 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:28:15,845 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:28:15,845 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:28:15,845 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:28:15,846 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:28:15,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:28:15,846 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:28:15,846 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:28:15,846 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:28:15,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:28:15,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:28:15,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:28:15,929 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:28:15,929 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:28:15,930 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-10-23 22:28:16,004 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/35376fb2a/a1e75b8b591844a3b92f0e24dadd7e6a/FLAG63dbfa38d [2018-10-23 22:28:16,648 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:28:16,649 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-10-23 22:28:16,669 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/35376fb2a/a1e75b8b591844a3b92f0e24dadd7e6a/FLAG63dbfa38d [2018-10-23 22:28:16,692 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/35376fb2a/a1e75b8b591844a3b92f0e24dadd7e6a [2018-10-23 22:28:16,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:28:16,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:28:16,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:28:16,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:28:16,734 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:28:16,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:28:16" (1/1) ... [2018-10-23 22:28:16,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adbd51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:16, skipping insertion in model container [2018-10-23 22:28:16,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:28:16" (1/1) ... [2018-10-23 22:28:16,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:28:16,814 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:28:17,402 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:28:17,409 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:28:17,616 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:28:17,638 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:28:17,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17 WrapperNode [2018-10-23 22:28:17,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:28:17,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:28:17,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:28:17,640 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:28:17,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (1/1) ... [2018-10-23 22:28:17,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (1/1) ... [2018-10-23 22:28:17,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:28:17,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:28:17,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:28:17,926 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:28:17,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (1/1) ... [2018-10-23 22:28:17,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (1/1) ... [2018-10-23 22:28:17,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (1/1) ... [2018-10-23 22:28:17,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (1/1) ... [2018-10-23 22:28:17,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (1/1) ... [2018-10-23 22:28:18,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (1/1) ... [2018-10-23 22:28:18,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (1/1) ... [2018-10-23 22:28:18,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:28:18,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:28:18,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:28:18,025 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:28:18,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (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 [2018-10-23 22:28:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:28:18,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:28:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:28:18,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:28:18,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:28:18,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:28:18,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:28:18,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:28:21,715 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:28:21,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:28:21 BoogieIcfgContainer [2018-10-23 22:28:21,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:28:21,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:28:21,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:28:21,721 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:28:21,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:28:16" (1/3) ... [2018-10-23 22:28:21,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313cd2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:28:21, skipping insertion in model container [2018-10-23 22:28:21,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:28:17" (2/3) ... [2018-10-23 22:28:21,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313cd2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:28:21, skipping insertion in model container [2018-10-23 22:28:21,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:28:21" (3/3) ... [2018-10-23 22:28:21,725 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label31_false-unreach-call_false-termination.c [2018-10-23 22:28:21,739 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:28:21,750 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:28:21,772 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:28:21,812 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:28:21,812 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:28:21,812 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:28:21,813 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:28:21,813 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:28:21,813 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:28:21,813 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:28:21,813 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:28:21,842 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-23 22:28:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-23 22:28:21,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:21,851 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] [2018-10-23 22:28:21,853 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:21,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:21,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1186927676, now seen corresponding path program 1 times [2018-10-23 22:28:21,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:21,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:21,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:21,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:21,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:22,284 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:28:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:28:22,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:28:22,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:28:22,383 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:28:22,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:28:22,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:28:22,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:28:22,409 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-23 22:28:24,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:28:24,225 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-23 22:28:24,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:28:24,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-10-23 22:28:24,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:28:24,250 INFO L225 Difference]: With dead ends: 691 [2018-10-23 22:28:24,250 INFO L226 Difference]: Without dead ends: 434 [2018-10-23 22:28:24,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:28:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-23 22:28:24,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-23 22:28:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-23 22:28:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-10-23 22:28:24,352 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 30 [2018-10-23 22:28:24,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:28:24,353 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-10-23 22:28:24,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:28:24,353 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-10-23 22:28:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-23 22:28:24,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:24,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:28:24,361 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:24,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:24,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1887120035, now seen corresponding path program 1 times [2018-10-23 22:28:24,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:24,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:24,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:24,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:24,364 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:28:24,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:28:24,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:28:24,633 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:28:24,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:28:24,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:28:24,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:28:24,636 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-10-23 22:28:30,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:28:30,672 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-10-23 22:28:30,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:28:30,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-10-23 22:28:30,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:28:30,688 INFO L225 Difference]: With dead ends: 1416 [2018-10-23 22:28:30,688 INFO L226 Difference]: Without dead ends: 988 [2018-10-23 22:28:30,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:28:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-23 22:28:30,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-10-23 22:28:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-23 22:28:30,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-10-23 22:28:30,800 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 107 [2018-10-23 22:28:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:28:30,800 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-10-23 22:28:30,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:28:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-10-23 22:28:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-23 22:28:30,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:30,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:28:30,820 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:30,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:30,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1620618787, now seen corresponding path program 1 times [2018-10-23 22:28:30,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:30,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:30,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:30,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:30,825 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:28:31,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:28:31,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:28:31,157 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:28:31,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:28:31,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:28:31,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:28:31,159 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-10-23 22:28:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:28:34,166 INFO L93 Difference]: Finished difference Result 2353 states and 3939 transitions. [2018-10-23 22:28:34,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:28:34,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-10-23 22:28:34,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:28:34,182 INFO L225 Difference]: With dead ends: 2353 [2018-10-23 22:28:34,183 INFO L226 Difference]: Without dead ends: 1386 [2018-10-23 22:28:34,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:28:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-10-23 22:28:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1352. [2018-10-23 22:28:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-23 22:28:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-10-23 22:28:34,261 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 171 [2018-10-23 22:28:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:28:34,262 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-10-23 22:28:34,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:28:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-10-23 22:28:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-23 22:28:34,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:28:34,270 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:28:34,270 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:28:34,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:34,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1467266075, now seen corresponding path program 1 times [2018-10-23 22:28:34,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:28:34,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:34,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:28:34,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:28:34,273 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:28:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:28:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:28:34,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:28:34,774 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:28:34,775 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-10-23 22:28:34,778 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [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], [522], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:28:34,847 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:28:34,848 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:28:37,007 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:28:37,009 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:28:37,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:28:37,020 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:28:38,801 INFO L232 lantSequenceWeakener]: Weakened 183 states. On average, predicates are now at 77.68% of their original sizes. [2018-10-23 22:28:38,802 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:28:39,084 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:28:39,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:28:39,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-23 22:28:39,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:28:39,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:28:39,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:28:39,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:28:39,087 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-10-23 22:28:41,414 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:29:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:10,343 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-10-23 22:29:10,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:29:10,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2018-10-23 22:29:10,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:10,352 INFO L225 Difference]: With dead ends: 2883 [2018-10-23 22:29:10,352 INFO L226 Difference]: Without dead ends: 1537 [2018-10-23 22:29:10,358 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:29:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-10-23 22:29:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-10-23 22:29:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-10-23 22:29:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-10-23 22:29:10,410 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 191 [2018-10-23 22:29:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:10,410 INFO L481 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-10-23 22:29:10,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:29:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-10-23 22:29:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-23 22:29:10,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:10,418 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:29:10,418 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:10,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:10,419 INFO L82 PathProgramCache]: Analyzing trace with hash -368059732, now seen corresponding path program 1 times [2018-10-23 22:29:10,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:10,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:10,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:10,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:10,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:11,007 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:29:11,202 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 22:29:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 156 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:29:11,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:29:11,649 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:29:11,649 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-10-23 22:29:11,650 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [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], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:29:11,656 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:29:11,657 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:29:14,794 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:29:14,795 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:29:14,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:14,803 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:29:17,752 INFO L232 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 78.41% of their original sizes. [2018-10-23 22:29:17,753 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:29:42,137 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:29:42,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:29:42,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-23 22:29:42,138 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:42,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-23 22:29:42,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-23 22:29:42,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-10-23 22:29:42,140 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 24 states. [2018-10-23 22:31:03,075 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:32:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:32:00,378 INFO L93 Difference]: Finished difference Result 3444 states and 5135 transitions. [2018-10-23 22:32:00,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-23 22:32:00,378 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 276 [2018-10-23 22:32:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:32:00,389 INFO L225 Difference]: With dead ends: 3444 [2018-10-23 22:32:00,389 INFO L226 Difference]: Without dead ends: 2098 [2018-10-23 22:32:00,396 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 233 SyntacticMatches, 20 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2018-10-23 22:32:00,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2018-10-23 22:32:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 2094. [2018-10-23 22:32:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2018-10-23 22:32:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2908 transitions. [2018-10-23 22:32:00,588 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2908 transitions. Word has length 276 [2018-10-23 22:32:00,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:32:00,589 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 2908 transitions. [2018-10-23 22:32:00,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-23 22:32:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2908 transitions. [2018-10-23 22:32:00,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-23 22:32:00,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:32:00,596 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:32:00,597 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:32:00,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:32:00,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1061017280, now seen corresponding path program 1 times [2018-10-23 22:32:00,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:32:00,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:32:00,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:32:00,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:32:00,599 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:32:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:32:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 128 proven. 125 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-23 22:32:01,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:32:01,016 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:32:01,016 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 303 with the following transitions: [2018-10-23 22:32:01,017 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [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], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:32:01,026 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:32:01,026 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:32:06,237 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:32:06,237 INFO L272 AbstractInterpreter]: Visited 120 different actions 234 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:32:06,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:32:06,245 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:32:09,591 INFO L232 lantSequenceWeakener]: Weakened 287 states. On average, predicates are now at 77.71% of their original sizes. [2018-10-23 22:32:09,592 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:32:13,375 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:32:13,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:32:13,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [8] total 23 [2018-10-23 22:32:13,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:32:13,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-23 22:32:13,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-23 22:32:13,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-10-23 22:32:13,377 INFO L87 Difference]: Start difference. First operand 2094 states and 2908 transitions. Second operand 17 states. Received shutdown request... [2018-10-23 22:32:17,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 22:32:17,230 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:32:17,235 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:32:17,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:32:17 BoogieIcfgContainer [2018-10-23 22:32:17,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:32:17,237 INFO L168 Benchmark]: Toolchain (without parser) took 240517.80 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -374.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-23 22:32:17,238 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-23 22:32:17,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 913.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:17,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 285.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:17,240 INFO L168 Benchmark]: Boogie Preprocessor took 98.14 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:17,241 INFO L168 Benchmark]: RCFGBuilder took 3692.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.5 MB). Peak memory consumption was 118.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:32:17,242 INFO L168 Benchmark]: TraceAbstraction took 235518.42 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 280.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 22:32:17,247 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 913.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 285.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.14 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3692.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.5 MB). Peak memory consumption was 118.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235518.42 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 280.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was constructing difference of abstraction (2094states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (16 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 235.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 184.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 762 SDtfs, 4573 SDslu, 700 SDs, 0 SdLazy, 6967 SolverSat, 1150 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 70.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 810 GetRequests, 711 SyntacticMatches, 23 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 34.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2094occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.6s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9949365232527337 AbsIntWeakeningRatio, 0.1174934725848564 AbsIntAvgWeakeningVarsNumRemoved, 338.3433420365535 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 55 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1077 NumberOfCodeBlocks, 1077 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1071 ConstructedInterpolants, 0 QuantifiedInterpolants, 1922937 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 510/783 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown