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_label44_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:19:19,988 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:19:19,990 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:19:20,007 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:19:20,007 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:19:20,008 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:19:20,010 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:19:20,013 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:19:20,016 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:19:20,018 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:19:20,024 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:19:20,025 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:19:20,026 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:19:20,027 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:19:20,031 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:19:20,032 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:19:20,033 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:19:20,038 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:19:20,042 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:19:20,044 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:19:20,047 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:19:20,050 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:19:20,054 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:19:20,066 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 17:19:20,082 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:19:20,083 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:19:20,084 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:19:20,084 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:19:20,084 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:19:20,084 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:19:20,085 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:19:20,085 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:19:20,085 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:19:20,085 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:19:20,085 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:19:20,086 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:19:20,086 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:19:20,086 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:19:20,087 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:19:20,087 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:19:20,087 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:19:20,087 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:19:20,087 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:19:20,088 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:19:20,088 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:19:20,088 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:19:20,088 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:19:20,088 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:19:20,089 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:19:20,089 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:19:20,089 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:19:20,089 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:19:20,089 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:19:20,090 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:19:20,090 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:19:20,090 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:19:20,090 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:19:20,090 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:19:20,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:19:20,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:19:20,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:19:20,160 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:19:20,160 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:19:20,161 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44_false-unreach-call_false-termination.c [2018-10-24 17:19:20,220 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d0ea0e6c8/e8c48b90d877466cbe7efa8c14554a88/FLAG5f69a7a79 [2018-10-24 17:19:20,812 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:19:20,813 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label44_false-unreach-call_false-termination.c [2018-10-24 17:19:20,840 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d0ea0e6c8/e8c48b90d877466cbe7efa8c14554a88/FLAG5f69a7a79 [2018-10-24 17:19:20,853 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d0ea0e6c8/e8c48b90d877466cbe7efa8c14554a88 [2018-10-24 17:19:20,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:19:20,866 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:19:20,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:19:20,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:19:20,871 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:19:20,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:19:20" (1/1) ... [2018-10-24 17:19:20,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8d5e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:20, skipping insertion in model container [2018-10-24 17:19:20,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:19:20" (1/1) ... [2018-10-24 17:19:20,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:19:20,941 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:19:21,395 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:19:21,400 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:19:21,510 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:19:21,538 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:19:21,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21 WrapperNode [2018-10-24 17:19:21,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:19:21,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:19:21,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:19:21,540 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:19:21,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:19:21,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:19:21,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:19:21,794 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:19:21,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:19:21,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:19:21,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:19:21,908 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:19:21,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:19:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:19:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:19:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:19:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:19:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:19:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:19:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:19:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:19:25,450 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:19:25,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:19:25 BoogieIcfgContainer [2018-10-24 17:19:25,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:19:25,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:19:25,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:19:25,465 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:19:25,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:19:20" (1/3) ... [2018-10-24 17:19:25,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:19:25, skipping insertion in model container [2018-10-24 17:19:25,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21" (2/3) ... [2018-10-24 17:19:25,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:19:25, skipping insertion in model container [2018-10-24 17:19:25,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:19:25" (3/3) ... [2018-10-24 17:19:25,469 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label44_false-unreach-call_false-termination.c [2018-10-24 17:19:25,480 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:19:25,489 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:19:25,507 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:19:25,559 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:19:25,559 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:19:25,560 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:19:25,560 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:19:25,560 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:19:25,561 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:19:25,561 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:19:25,561 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:19:25,597 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 17:19:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 17:19:25,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:25,612 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:25,615 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:25,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:25,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1845971615, now seen corresponding path program 1 times [2018-10-24 17:19:25,623 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:25,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:25,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:25,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:25,673 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:26,187 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:19:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:26,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:26,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:19:26,269 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:26,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:19:26,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:19:26,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:26,295 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 17:19:27,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:27,983 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-24 17:19:27,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:19:27,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2018-10-24 17:19:27,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:28,006 INFO L225 Difference]: With dead ends: 621 [2018-10-24 17:19:28,006 INFO L226 Difference]: Without dead ends: 382 [2018-10-24 17:19:28,013 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 [2018-10-24 17:19:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-24 17:19:28,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-24 17:19:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-24 17:19:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-24 17:19:28,114 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 95 [2018-10-24 17:19:28,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:28,116 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-24 17:19:28,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:19:28,116 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-24 17:19:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 17:19:28,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:28,131 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:28,131 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:28,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:28,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1621291506, now seen corresponding path program 1 times [2018-10-24 17:19:28,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:28,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:28,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:28,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:28,140 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:28,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:28,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:19:28,414 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:28,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:19:28,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:19:28,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:28,417 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 3 states. [2018-10-24 17:19:29,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:29,766 INFO L93 Difference]: Finished difference Result 1057 states and 1749 transitions. [2018-10-24 17:19:29,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:19:29,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2018-10-24 17:19:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:29,775 INFO L225 Difference]: With dead ends: 1057 [2018-10-24 17:19:29,775 INFO L226 Difference]: Without dead ends: 681 [2018-10-24 17:19:29,782 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 [2018-10-24 17:19:29,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2018-10-24 17:19:29,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 676. [2018-10-24 17:19:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2018-10-24 17:19:29,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1044 transitions. [2018-10-24 17:19:29,834 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1044 transitions. Word has length 104 [2018-10-24 17:19:29,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:29,835 INFO L481 AbstractCegarLoop]: Abstraction has 676 states and 1044 transitions. [2018-10-24 17:19:29,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:19:29,836 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1044 transitions. [2018-10-24 17:19:29,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 17:19:29,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:29,841 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:29,841 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:29,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:29,842 INFO L82 PathProgramCache]: Analyzing trace with hash -822617986, now seen corresponding path program 1 times [2018-10-24 17:19:29,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:29,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:29,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:29,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:29,844 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:30,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:30,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:19:30,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:30,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:19:30,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:19:30,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:30,072 INFO L87 Difference]: Start difference. First operand 676 states and 1044 transitions. Second operand 3 states. [2018-10-24 17:19:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:31,690 INFO L93 Difference]: Finished difference Result 1927 states and 3080 transitions. [2018-10-24 17:19:31,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:19:31,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2018-10-24 17:19:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:31,705 INFO L225 Difference]: With dead ends: 1927 [2018-10-24 17:19:31,705 INFO L226 Difference]: Without dead ends: 1257 [2018-10-24 17:19:31,713 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 [2018-10-24 17:19:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2018-10-24 17:19:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2018-10-24 17:19:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1257 states. [2018-10-24 17:19:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1817 transitions. [2018-10-24 17:19:31,805 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1817 transitions. Word has length 110 [2018-10-24 17:19:31,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:31,805 INFO L481 AbstractCegarLoop]: Abstraction has 1257 states and 1817 transitions. [2018-10-24 17:19:31,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:19:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1817 transitions. [2018-10-24 17:19:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 17:19:31,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:31,813 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:31,813 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:31,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:31,814 INFO L82 PathProgramCache]: Analyzing trace with hash 876342080, now seen corresponding path program 1 times [2018-10-24 17:19:31,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:31,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:31,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:31,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:31,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:32,043 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:19:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 17:19:32,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:19:32,122 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:19:32,122 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2018-10-24 17:19:32,125 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [103], [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], [379], [387], [395], [403], [411], [419], [427], [431], [433], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 17:19:32,194 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:19:32,195 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:19:44,815 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:19:44,817 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 17:19:44,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:44,849 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:19:50,458 INFO L232 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 80.93% of their original sizes. [2018-10-24 17:19:50,458 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 17:19:54,670 INFO L413 sIntCurrentIteration]: We have 133 unified AI predicates [2018-10-24 17:19:54,671 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 17:19:54,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:19:54,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-24 17:19:54,672 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:54,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 17:19:54,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 17:19:54,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-10-24 17:19:54,674 INFO L87 Difference]: Start difference. First operand 1257 states and 1817 transitions. Second operand 15 states. [2018-10-24 17:21:40,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:21:40,340 INFO L93 Difference]: Finished difference Result 2808 states and 4122 transitions. [2018-10-24 17:21:40,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 17:21:40,340 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 134 [2018-10-24 17:21:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:21:40,352 INFO L225 Difference]: With dead ends: 2808 [2018-10-24 17:21:40,352 INFO L226 Difference]: Without dead ends: 1557 [2018-10-24 17:21:40,358 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 146 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2018-10-24 17:21:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2018-10-24 17:21:40,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1404. [2018-10-24 17:21:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2018-10-24 17:21:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1972 transitions. [2018-10-24 17:21:40,499 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1972 transitions. Word has length 134 [2018-10-24 17:21:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:21:40,500 INFO L481 AbstractCegarLoop]: Abstraction has 1404 states and 1972 transitions. [2018-10-24 17:21:40,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 17:21:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1972 transitions. [2018-10-24 17:21:40,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 17:21:40,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:21:40,506 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-24 17:21:40,506 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:21:40,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:21:40,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1049891743, now seen corresponding path program 1 times [2018-10-24 17:21:40,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:21:40,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:21:40,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:21:40,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:21:40,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:21:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:21:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 46 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 17:21:40,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:21:40,847 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:21:40,847 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 145 with the following transitions: [2018-10-24 17:21:40,847 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [103], [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], [379], [387], [395], [403], [411], [419], [427], [431], [433], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 17:21:40,853 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:21:40,854 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:22:24,399 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:22:24,399 INFO L272 AbstractInterpreter]: Visited 100 different actions 296 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 38 variables. [2018-10-24 17:22:24,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:22:24,406 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:22:32,093 INFO L232 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 81.46% of their original sizes. [2018-10-24 17:22:32,094 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 17:23:20,851 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:23:20,857 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:23:20,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:23:20 BoogieIcfgContainer [2018-10-24 17:23:20,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:23:20,859 INFO L168 Benchmark]: Toolchain (without parser) took 239993.79 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -689.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 17:23:20,864 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. [2018-10-24 17:23:20,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.77 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. [2018-10-24 17:23:20,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 253.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -804.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:23:20,868 INFO L168 Benchmark]: Boogie Preprocessor took 113.51 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:23:20,869 INFO L168 Benchmark]: RCFGBuilder took 3544.12 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: 106.1 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:23:20,871 INFO L168 Benchmark]: TraceAbstraction took 235405.29 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -33.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 17:23:20,879 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 671.77 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 253.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -804.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.51 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3544.12 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: 106.1 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235405.29 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -33.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 436]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 436). Cancelled while BasicCegarLoop was analyzing trace of length 145 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 235.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 110.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1164 SDtfs, 1828 SDslu, 522 SDs, 0 SdLazy, 1880 SolverSat, 574 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 159 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1404occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 56.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9929005092048567 AbsIntWeakeningRatio, 0.26811594202898553 AbsIntAvgWeakeningVarsNumRemoved, 516.4420289855072 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 158 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 443 NumberOfCodeBlocks, 443 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 439 ConstructedInterpolants, 0 QuantifiedInterpolants, 148998 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 58/60 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown