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/Problem02_label50_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:16:00,078 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:16:00,080 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:16:00,092 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:16:00,093 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:16:00,094 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:16:00,095 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:16:00,097 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:16:00,098 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:16:00,099 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:16:00,100 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:16:00,101 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:16:00,101 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:16:00,102 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:16:00,104 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:16:00,105 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:16:00,105 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:16:00,107 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:16:00,109 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:16:00,111 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:16:00,112 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:16:00,113 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:16:00,116 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 21:16:00,125 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 21:16:00,141 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:16:00,141 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:16:00,143 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:16:00,143 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 21:16:00,144 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 21:16:00,144 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 21:16:00,144 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 21:16:00,144 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 21:16:00,144 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 21:16:00,145 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 21:16:00,145 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 21:16:00,145 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 21:16:00,147 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:16:00,147 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:16:00,147 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:16:00,147 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:16:00,147 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:16:00,147 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:16:00,148 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:16:00,148 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:16:00,148 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:16:00,148 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:16:00,148 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:16:00,150 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:16:00,150 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:16:00,150 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:16:00,150 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:16:00,150 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:16:00,151 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 21:16:00,151 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:16:00,151 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:16:00,151 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:16:00,152 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:16:00,152 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 21:16:00,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:16:00,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:16:00,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:16:00,238 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:16:00,238 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:16:00,239 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50_false-unreach-call_false-termination.c [2018-10-23 21:16:00,304 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6cc0186ca/dcfe368a3b4f46679a7245bc08de4cb6/FLAGb15d679a2 [2018-10-23 21:16:00,865 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:16:00,866 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label50_false-unreach-call_false-termination.c [2018-10-23 21:16:00,879 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6cc0186ca/dcfe368a3b4f46679a7245bc08de4cb6/FLAGb15d679a2 [2018-10-23 21:16:00,895 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6cc0186ca/dcfe368a3b4f46679a7245bc08de4cb6 [2018-10-23 21:16:00,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:16:00,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:16:00,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:16:00,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:16:00,913 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:16:00,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d74a1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:00, skipping insertion in model container [2018-10-23 21:16:00,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:16:00" (1/1) ... [2018-10-23 21:16:00,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:16:00,993 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:16:01,468 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:16:01,473 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:16:01,612 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:16:01,642 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:16:01,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01 WrapperNode [2018-10-23 21:16:01,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:16:01,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:16:01,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:16:01,645 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:16:01,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (1/1) ... [2018-10-23 21:16:01,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (1/1) ... [2018-10-23 21:16:01,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:16:01,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:16:01,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:16:01,836 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:16:01,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (1/1) ... [2018-10-23 21:16:01,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (1/1) ... [2018-10-23 21:16:01,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (1/1) ... [2018-10-23 21:16:01,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (1/1) ... [2018-10-23 21:16:01,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (1/1) ... [2018-10-23 21:16:01,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (1/1) ... [2018-10-23 21:16:01,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (1/1) ... [2018-10-23 21:16:01,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:16:01,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:16:01,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:16:01,919 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:16:01,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (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 21:16:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 21:16:01,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 21:16:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 21:16:01,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 21:16:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:16:01,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:16:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 21:16:01,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 21:16:05,434 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:16:05,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:16:05 BoogieIcfgContainer [2018-10-23 21:16:05,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:16:05,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:16:05,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:16:05,441 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:16:05,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:16:00" (1/3) ... [2018-10-23 21:16:05,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3c7003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:16:05, skipping insertion in model container [2018-10-23 21:16:05,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:01" (2/3) ... [2018-10-23 21:16:05,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3c7003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:16:05, skipping insertion in model container [2018-10-23 21:16:05,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:16:05" (3/3) ... [2018-10-23 21:16:05,446 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label50_false-unreach-call_false-termination.c [2018-10-23 21:16:05,457 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:16:05,469 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:16:05,489 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:16:05,535 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:16:05,536 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:16:05,536 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:16:05,536 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:16:05,536 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:16:05,537 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:16:05,537 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:16:05,537 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:16:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 21:16:05,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-23 21:16:05,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:05,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:16:05,585 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:05,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash -110615784, now seen corresponding path program 1 times [2018-10-23 21:16:05,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:05,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:05,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:05,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:05,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:06,228 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 21:16:06,270 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 21:16:06,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:16:06,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:16:06,275 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:16:06,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:16:06,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:16:06,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:16:06,302 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 21:16:08,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:16:08,376 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-23 21:16:08,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:16:08,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2018-10-23 21:16:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:16:08,399 INFO L225 Difference]: With dead ends: 621 [2018-10-23 21:16:08,399 INFO L226 Difference]: Without dead ends: 382 [2018-10-23 21:16:08,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:16:08,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-23 21:16:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-23 21:16:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-23 21:16:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-23 21:16:08,486 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 88 [2018-10-23 21:16:08,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:16:08,487 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-23 21:16:08,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:16:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-23 21:16:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-23 21:16:08,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:08,494 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:16:08,495 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:08,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:08,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2087174949, now seen corresponding path program 1 times [2018-10-23 21:16:08,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:08,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:08,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:08,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:08,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:16:08,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:16:08,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:16:08,680 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:16:08,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 21:16:08,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 21:16:08,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:16:08,683 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 3 states. [2018-10-23 21:16:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:16:09,753 INFO L93 Difference]: Finished difference Result 1057 states and 1749 transitions. [2018-10-23 21:16:09,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:16:09,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2018-10-23 21:16:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:16:09,764 INFO L225 Difference]: With dead ends: 1057 [2018-10-23 21:16:09,764 INFO L226 Difference]: Without dead ends: 681 [2018-10-23 21:16:09,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 21:16:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2018-10-23 21:16:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 676. [2018-10-23 21:16:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2018-10-23 21:16:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1044 transitions. [2018-10-23 21:16:09,822 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1044 transitions. Word has length 97 [2018-10-23 21:16:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:16:09,823 INFO L481 AbstractCegarLoop]: Abstraction has 676 states and 1044 transitions. [2018-10-23 21:16:09,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 21:16:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1044 transitions. [2018-10-23 21:16:09,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-23 21:16:09,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:09,829 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:16:09,830 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:09,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:09,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1316217369, now seen corresponding path program 1 times [2018-10-23 21:16:09,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:09,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:09,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:09,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:09,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:16:10,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:16:10,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:16:10,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:16:10,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:16:10,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:16:10,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:16:10,009 INFO L87 Difference]: Start difference. First operand 676 states and 1044 transitions. Second operand 6 states. [2018-10-23 21:16:13,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:16:13,223 INFO L93 Difference]: Finished difference Result 2173 states and 3497 transitions. [2018-10-23 21:16:13,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:16:13,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-23 21:16:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:16:13,240 INFO L225 Difference]: With dead ends: 2173 [2018-10-23 21:16:13,240 INFO L226 Difference]: Without dead ends: 1503 [2018-10-23 21:16:13,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-23 21:16:13,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2018-10-23 21:16:13,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1483. [2018-10-23 21:16:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1483 states. [2018-10-23 21:16:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2166 transitions. [2018-10-23 21:16:13,320 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2166 transitions. Word has length 103 [2018-10-23 21:16:13,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:16:13,321 INFO L481 AbstractCegarLoop]: Abstraction has 1483 states and 2166 transitions. [2018-10-23 21:16:13,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:16:13,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2166 transitions. [2018-10-23 21:16:13,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-23 21:16:13,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:13,326 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:16:13,326 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:13,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:13,327 INFO L82 PathProgramCache]: Analyzing trace with hash -654069662, now seen corresponding path program 1 times [2018-10-23 21:16:13,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:13,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:13,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:13,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:13,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:16:13,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:16:13,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:16:13,551 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:16:13,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:16:13,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:16:13,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:16:13,553 INFO L87 Difference]: Start difference. First operand 1483 states and 2166 transitions. Second operand 6 states. [2018-10-23 21:16:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:16:15,140 INFO L93 Difference]: Finished difference Result 4036 states and 5989 transitions. [2018-10-23 21:16:15,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:16:15,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-23 21:16:15,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:16:15,162 INFO L225 Difference]: With dead ends: 4036 [2018-10-23 21:16:15,162 INFO L226 Difference]: Without dead ends: 2559 [2018-10-23 21:16:15,171 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 21:16:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2018-10-23 21:16:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2527. [2018-10-23 21:16:15,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2527 states. [2018-10-23 21:16:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 3541 transitions. [2018-10-23 21:16:15,275 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 3541 transitions. Word has length 111 [2018-10-23 21:16:15,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:16:15,275 INFO L481 AbstractCegarLoop]: Abstraction has 2527 states and 3541 transitions. [2018-10-23 21:16:15,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:16:15,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 3541 transitions. [2018-10-23 21:16:15,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-23 21:16:15,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:15,281 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 21:16:15,281 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:15,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:15,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1207925353, now seen corresponding path program 1 times [2018-10-23 21:16:15,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:15,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:15,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:15,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:15,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-23 21:16:15,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:16:15,690 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 21:16:15,691 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 126 with the following transitions: [2018-10-23 21:16:15,693 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [375], [377], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 21:16:15,789 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 21:16:15,789 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 21:17:22,605 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 21:17:22,607 INFO L272 AbstractInterpreter]: Visited 92 different actions 356 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-23 21:17:22,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:17:22,622 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 21:17:28,401 INFO L232 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 81.01% of their original sizes. [2018-10-23 21:17:28,402 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 21:19:30,791 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 21:19:30,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:19:30,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 20 [2018-10-23 21:19:30,792 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:19:30,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-23 21:19:30,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-23 21:19:30,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-10-23 21:19:30,794 INFO L87 Difference]: Start difference. First operand 2527 states and 3541 transitions. Second operand 17 states. Received shutdown request... [2018-10-23 21:20:18,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 21:20:18,528 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:20:18,535 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:20:18,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:20:18 BoogieIcfgContainer [2018-10-23 21:20:18,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:20:18,536 INFO L168 Benchmark]: Toolchain (without parser) took 257629.52 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -119.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 21:20:18,538 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:20:18,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:20:18,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 191.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -825.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:20:18,540 INFO L168 Benchmark]: Boogie Preprocessor took 79.23 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:20:18,541 INFO L168 Benchmark]: RCFGBuilder took 3519.76 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: 117.3 MB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:20:18,542 INFO L168 Benchmark]: TraceAbstraction took 253099.20 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 553.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 21:20:18,547 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 734.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 191.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -825.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.23 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3519.76 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: 117.3 MB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253099.20 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 553.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 415]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 415). Cancelled while BasicCegarLoop was constructing difference of abstraction (2527states) and FLOYD_HOARE automaton (currently 17 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (56 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 253.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 55.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 777 SDtfs, 2046 SDslu, 422 SDs, 0 SdLazy, 2935 SolverSat, 713 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 161 GetRequests, 70 SyntacticMatches, 52 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 130.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2527occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 66.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9925320056899001 AbsIntWeakeningRatio, 0.2661290322580645 AbsIntAvgWeakeningVarsNumRemoved, 1473.217741935484 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 57 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 524 NumberOfCodeBlocks, 524 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 519 ConstructedInterpolants, 0 QuantifiedInterpolants, 139986 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 75/83 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown