java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:20:08,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:20:08,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:20:08,454 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:20:08,455 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:20:08,456 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:20:08,457 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:20:08,459 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:20:08,460 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:20:08,461 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:20:08,462 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:20:08,462 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:20:08,463 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:20:08,464 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:20:08,465 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:20:08,466 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:20:08,467 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:20:08,469 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:20:08,472 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:20:08,476 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:20:08,477 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:20:08,479 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:20:08,481 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:20:08,481 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:20:08,482 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:20:08,483 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:20:08,484 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:20:08,484 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:20:08,485 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:20:08,486 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:20:08,486 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:20:08,487 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:20:08,487 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:20:08,488 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:20:08,489 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:20:08,489 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:20:08,490 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 12:20:08,510 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:20:08,510 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:20:08,511 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:20:08,511 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:20:08,512 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:20:08,512 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:20:08,512 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:20:08,512 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:20:08,512 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:20:08,513 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:20:08,513 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:20:08,513 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:20:08,513 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:20:08,514 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:20:08,514 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:20:08,514 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:20:08,514 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:20:08,514 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:20:08,516 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:20:08,516 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:20:08,516 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:20:08,516 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:20:08,516 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:20:08,517 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:20:08,517 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:20:08,517 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:20:08,517 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:20:08,517 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:20:08,517 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:20:08,518 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:20:08,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:20:08,519 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:20:08,519 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:20:08,519 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:20:08,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:20:08,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:20:08,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:20:08,600 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:20:08,601 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:20:08,602 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c [2018-11-07 12:20:08,662 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/514868187/d03d1a04184442a391d14a53e8981ed7/FLAG343f4c83e [2018-11-07 12:20:09,283 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:20:09,285 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c [2018-11-07 12:20:09,308 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/514868187/d03d1a04184442a391d14a53e8981ed7/FLAG343f4c83e [2018-11-07 12:20:09,323 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/514868187/d03d1a04184442a391d14a53e8981ed7 [2018-11-07 12:20:09,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:20:09,333 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:20:09,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:20:09,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:20:09,338 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:20:09,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:20:09" (1/1) ... [2018-11-07 12:20:09,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:09, skipping insertion in model container [2018-11-07 12:20:09,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:20:09" (1/1) ... [2018-11-07 12:20:09,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:20:09,453 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:20:10,186 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:20:10,190 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:20:10,464 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:20:10,486 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:20:10,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10 WrapperNode [2018-11-07 12:20:10,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:20:10,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:20:10,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:20:10,489 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:20:10,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (1/1) ... [2018-11-07 12:20:10,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (1/1) ... [2018-11-07 12:20:10,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:20:10,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:20:10,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:20:10,694 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:20:10,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (1/1) ... [2018-11-07 12:20:10,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (1/1) ... [2018-11-07 12:20:10,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (1/1) ... [2018-11-07 12:20:10,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (1/1) ... [2018-11-07 12:20:10,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (1/1) ... [2018-11-07 12:20:10,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (1/1) ... [2018-11-07 12:20:10,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (1/1) ... [2018-11-07 12:20:10,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:20:10,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:20:10,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:20:10,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:20:10,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:20:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:20:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:20:10,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:20:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:20:10,928 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:20:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:20:10,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:20:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:20:10,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:20:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:20:10,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:20:16,806 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:20:16,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:20:16 BoogieIcfgContainer [2018-11-07 12:20:16,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:20:16,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:20:16,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:20:16,812 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:20:16,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:20:09" (1/3) ... [2018-11-07 12:20:16,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:20:16, skipping insertion in model container [2018-11-07 12:20:16,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:10" (2/3) ... [2018-11-07 12:20:16,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:20:16, skipping insertion in model container [2018-11-07 12:20:16,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:20:16" (3/3) ... [2018-11-07 12:20:16,816 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label43_false-unreach-call.c [2018-11-07 12:20:16,825 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:20:16,833 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:20:16,849 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:20:16,888 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:20:16,888 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:20:16,888 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:20:16,889 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:20:16,889 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:20:16,889 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:20:16,889 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:20:16,889 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:20:16,921 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 12:20:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-07 12:20:16,928 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:20:16,929 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:20:16,931 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:20:16,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:20:16,937 INFO L82 PathProgramCache]: Analyzing trace with hash 447035884, now seen corresponding path program 1 times [2018-11-07 12:20:16,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:20:16,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:16,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:20:16,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:16,984 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:20:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:20:17,309 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:20:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:20:17,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:20:17,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:20:17,353 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:20:17,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:20:17,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:20:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:20:17,376 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 12:20:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:20:20,539 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 12:20:20,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:20:20,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-11-07 12:20:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:20:20,565 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 12:20:20,566 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 12:20:20,574 INFO L604 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 [2018-11-07 12:20:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 12:20:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 12:20:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 12:20:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-07 12:20:20,683 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 16 [2018-11-07 12:20:20,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:20:20,684 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-07 12:20:20,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:20:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-07 12:20:20,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 12:20:20,690 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:20:20,691 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:20:20,691 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:20:20,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:20:20,692 INFO L82 PathProgramCache]: Analyzing trace with hash 803475559, now seen corresponding path program 1 times [2018-11-07 12:20:20,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:20:20,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:20,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:20:20,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:20,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:20:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:20:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:20:21,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:20:21,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:20:21,123 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:20:21,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:20:21,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:20:21,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:20:21,126 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-07 12:20:28,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:20:28,837 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-07 12:20:28,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:20:28,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-11-07 12:20:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:20:28,853 INFO L225 Difference]: With dead ends: 2184 [2018-11-07 12:20:28,853 INFO L226 Difference]: Without dead ends: 1446 [2018-11-07 12:20:28,859 INFO L604 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 [2018-11-07 12:20:28,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-07 12:20:28,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-07 12:20:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-07 12:20:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-07 12:20:28,909 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 109 [2018-11-07 12:20:28,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:20:28,909 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-07 12:20:28,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:20:28,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-07 12:20:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 12:20:28,919 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:20:28,919 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:20:28,919 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:20:28,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:20:28,920 INFO L82 PathProgramCache]: Analyzing trace with hash -983617648, now seen corresponding path program 1 times [2018-11-07 12:20:28,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:20:28,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:28,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:20:28,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:28,921 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:20:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:20:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:20:29,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:20:29,234 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:20:29,235 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-07 12:20:29,238 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 12:20:29,297 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:20:29,298 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:20:30,158 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:20:30,160 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:20:30,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:20:30,204 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:20:31,200 INFO L227 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 77.35% of their original sizes. [2018-11-07 12:20:31,201 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:20:32,711 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-11-07 12:20:32,711 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:20:32,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:20:32,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 12:20:32,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:20:32,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 12:20:32,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 12:20:32,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 12:20:32,715 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-07 12:20:36,939 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown