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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:28:15,293 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:28:15,295 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:28:15,307 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:28:15,308 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:28:15,309 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:28:15,311 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:28:15,313 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:28:15,316 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:28:15,317 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:28:15,319 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:28:15,319 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:28:15,326 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:28:15,327 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:28:15,329 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:28:15,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:28:15,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:28:15,337 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:28:15,342 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:28:15,343 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:28:15,346 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:28:15,347 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:28:15,350 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 01:28:15,362 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:28:15,363 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:28:15,365 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:28:15,366 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:28:15,367 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 01:28:15,396 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:28:15,397 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:28:15,397 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:28:15,398 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:28:15,398 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:28:15,398 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:28:15,398 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:28:15,398 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:28:15,399 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:28:15,399 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:28:15,399 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:28:15,399 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:28:15,400 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:28:15,400 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:28:15,400 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:28:15,400 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:28:15,400 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:28:15,401 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:28:15,401 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:28:15,401 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:28:15,401 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:28:15,401 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:28:15,402 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:28:15,402 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:28:15,402 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:28:15,402 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:28:15,402 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:28:15,403 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:28:15,403 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:28:15,403 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:28:15,403 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:28:15,403 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:28:15,403 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:28:15,404 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:28:15,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:28:15,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:28:15,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:28:15,494 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:28:15,494 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:28:15,495 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label19_true-unreach-call.c [2018-11-07 01:28:15,564 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb9e04cb4/829f387b74ed46a3868a62f7d599041e/FLAG748e9ac8f [2018-11-07 01:28:16,164 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:28:16,167 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label19_true-unreach-call.c [2018-11-07 01:28:16,189 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb9e04cb4/829f387b74ed46a3868a62f7d599041e/FLAG748e9ac8f [2018-11-07 01:28:16,214 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb9e04cb4/829f387b74ed46a3868a62f7d599041e [2018-11-07 01:28:16,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:28:16,230 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:28:16,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:28:16,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:28:16,235 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:28:16,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:16" (1/1) ... [2018-11-07 01:28:16,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e45d4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:16, skipping insertion in model container [2018-11-07 01:28:16,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:16" (1/1) ... [2018-11-07 01:28:16,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:28:16,348 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:28:17,212 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:28:17,218 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:28:17,466 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:28:17,487 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:28:17,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17 WrapperNode [2018-11-07 01:28:17,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:28:17,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:28:17,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:28:17,489 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:28:17,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (1/1) ... [2018-11-07 01:28:17,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (1/1) ... [2018-11-07 01:28:17,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:28:17,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:28:17,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:28:17,681 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:28:17,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (1/1) ... [2018-11-07 01:28:17,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (1/1) ... [2018-11-07 01:28:17,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (1/1) ... [2018-11-07 01:28:17,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (1/1) ... [2018-11-07 01:28:17,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (1/1) ... [2018-11-07 01:28:17,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (1/1) ... [2018-11-07 01:28:17,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (1/1) ... [2018-11-07 01:28:17,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:28:17,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:28:17,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:28:17,834 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:28:17,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (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 01:28:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:28:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:28:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:28:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:28:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:28:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:28:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:28:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:28:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:28:22,616 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:28:22,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:28:22 BoogieIcfgContainer [2018-11-07 01:28:22,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:28:22,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:28:22,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:28:22,622 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:28:22,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:28:16" (1/3) ... [2018-11-07 01:28:22,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bed37b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:28:22, skipping insertion in model container [2018-11-07 01:28:22,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:17" (2/3) ... [2018-11-07 01:28:22,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bed37b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:28:22, skipping insertion in model container [2018-11-07 01:28:22,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:28:22" (3/3) ... [2018-11-07 01:28:22,627 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label19_true-unreach-call.c [2018-11-07 01:28:22,637 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:28:22,651 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:28:22,666 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:28:22,715 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:28:22,715 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:28:22,715 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:28:22,715 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:28:22,715 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:28:22,716 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:28:22,716 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:28:22,716 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:28:22,757 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 01:28:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-11-07 01:28:22,776 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:28:22,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:22,781 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:28:22,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:28:22,786 INFO L82 PathProgramCache]: Analyzing trace with hash 2122630385, now seen corresponding path program 1 times [2018-11-07 01:28:22,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:28:22,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:22,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:28:22,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:22,843 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:28:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:28:23,756 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:28:23,982 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 01:28:23,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:28:23,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:28:23,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:28:23,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:28:24,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:28:24,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:28:24,015 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 01:28:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:28:25,912 INFO L93 Difference]: Finished difference Result 855 states and 1508 transitions. [2018-11-07 01:28:25,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:28:25,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2018-11-07 01:28:25,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:28:25,936 INFO L225 Difference]: With dead ends: 855 [2018-11-07 01:28:25,936 INFO L226 Difference]: Without dead ends: 541 [2018-11-07 01:28:25,944 INFO L604 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 [2018-11-07 01:28:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2018-11-07 01:28:26,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 527. [2018-11-07 01:28:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-11-07 01:28:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 901 transitions. [2018-11-07 01:28:26,041 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 901 transitions. Word has length 194 [2018-11-07 01:28:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:28:26,043 INFO L480 AbstractCegarLoop]: Abstraction has 527 states and 901 transitions. [2018-11-07 01:28:26,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:28:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 901 transitions. [2018-11-07 01:28:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-07 01:28:26,065 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:28:26,065 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:26,068 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:28:26,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:28:26,069 INFO L82 PathProgramCache]: Analyzing trace with hash -618112360, now seen corresponding path program 1 times [2018-11-07 01:28:26,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:28:26,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:26,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:28:26,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:26,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:28:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:28:26,457 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 01:28:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:28:26,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:28:26,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:28:26,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:28:26,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:28:26,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:28:26,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:28:26,730 INFO L87 Difference]: Start difference. First operand 527 states and 901 transitions. Second operand 6 states. [2018-11-07 01:28:30,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:28:30,747 INFO L93 Difference]: Finished difference Result 1590 states and 2790 transitions. [2018-11-07 01:28:30,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 01:28:30,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-11-07 01:28:30,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:28:30,761 INFO L225 Difference]: With dead ends: 1590 [2018-11-07 01:28:30,761 INFO L226 Difference]: Without dead ends: 1069 [2018-11-07 01:28:30,767 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:28:30,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-11-07 01:28:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-11-07 01:28:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-11-07 01:28:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1744 transitions. [2018-11-07 01:28:30,837 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1744 transitions. Word has length 204 [2018-11-07 01:28:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:28:30,838 INFO L480 AbstractCegarLoop]: Abstraction has 1024 states and 1744 transitions. [2018-11-07 01:28:30,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:28:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1744 transitions. [2018-11-07 01:28:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-07 01:28:30,843 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:28:30,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:30,844 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:28:30,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:28:30,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1363104416, now seen corresponding path program 1 times [2018-11-07 01:28:30,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:28:30,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:30,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:28:30,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:30,846 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:28:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:28:31,089 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:28:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:28:31,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:28:31,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 01:28:31,286 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:28:31,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 01:28:31,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 01:28:31,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:28:31,288 INFO L87 Difference]: Start difference. First operand 1024 states and 1744 transitions. Second operand 5 states. [2018-11-07 01:28:34,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:28:34,535 INFO L93 Difference]: Finished difference Result 3166 states and 5668 transitions. [2018-11-07 01:28:34,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:28:34,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2018-11-07 01:28:34,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:28:34,563 INFO L225 Difference]: With dead ends: 3166 [2018-11-07 01:28:34,563 INFO L226 Difference]: Without dead ends: 2148 [2018-11-07 01:28:34,571 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 01:28:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-11-07 01:28:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-11-07 01:28:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-11-07 01:28:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3420 transitions. [2018-11-07 01:28:34,676 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3420 transitions. Word has length 205 [2018-11-07 01:28:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:28:34,676 INFO L480 AbstractCegarLoop]: Abstraction has 2105 states and 3420 transitions. [2018-11-07 01:28:34,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 01:28:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3420 transitions. [2018-11-07 01:28:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-11-07 01:28:34,688 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:28:34,689 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:34,689 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:28:34,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:28:34,689 INFO L82 PathProgramCache]: Analyzing trace with hash 639671669, now seen corresponding path program 1 times [2018-11-07 01:28:34,690 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:28:34,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:34,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:28:34,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:34,691 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:28:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:28:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:28:35,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:28:35,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:28:35,037 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:28:35,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:28:35,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:28:35,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:28:35,039 INFO L87 Difference]: Start difference. First operand 2105 states and 3420 transitions. Second operand 3 states. [2018-11-07 01:28:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:28:36,768 INFO L93 Difference]: Finished difference Result 4205 states and 6860 transitions. [2018-11-07 01:28:36,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:28:36,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2018-11-07 01:28:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:28:36,788 INFO L225 Difference]: With dead ends: 4205 [2018-11-07 01:28:36,788 INFO L226 Difference]: Without dead ends: 2106 [2018-11-07 01:28:36,795 INFO L604 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 [2018-11-07 01:28:36,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2018-11-07 01:28:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1941. [2018-11-07 01:28:36,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1941 states. [2018-11-07 01:28:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2865 transitions. [2018-11-07 01:28:36,849 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2865 transitions. Word has length 207 [2018-11-07 01:28:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:28:36,850 INFO L480 AbstractCegarLoop]: Abstraction has 1941 states and 2865 transitions. [2018-11-07 01:28:36,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:28:36,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2865 transitions. [2018-11-07 01:28:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 01:28:36,857 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:28:36,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:36,857 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:28:36,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:28:36,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1660323759, now seen corresponding path program 1 times [2018-11-07 01:28:36,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:28:36,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:36,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:28:36,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:36,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:28:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:28:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:28:37,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:28:37,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 01:28:37,191 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:28:37,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 01:28:37,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 01:28:37,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 01:28:37,192 INFO L87 Difference]: Start difference. First operand 1941 states and 2865 transitions. Second operand 4 states. [2018-11-07 01:28:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:28:42,045 INFO L93 Difference]: Finished difference Result 7424 states and 11507 transitions. [2018-11-07 01:28:42,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:28:42,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2018-11-07 01:28:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:28:42,075 INFO L225 Difference]: With dead ends: 7424 [2018-11-07 01:28:42,075 INFO L226 Difference]: Without dead ends: 5489 [2018-11-07 01:28:42,086 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 01:28:42,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2018-11-07 01:28:42,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 5483. [2018-11-07 01:28:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5483 states. [2018-11-07 01:28:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 7840 transitions. [2018-11-07 01:28:42,233 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 7840 transitions. Word has length 209 [2018-11-07 01:28:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:28:42,234 INFO L480 AbstractCegarLoop]: Abstraction has 5483 states and 7840 transitions. [2018-11-07 01:28:42,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 01:28:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 7840 transitions. [2018-11-07 01:28:42,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 01:28:42,258 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:28:42,258 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:42,259 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:28:42,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:28:42,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1172684700, now seen corresponding path program 1 times [2018-11-07 01:28:42,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:28:42,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:42,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:28:42,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:28:42,264 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:28:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:28:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:28:42,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:28:42,456 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:28:42,457 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-07 01:28:42,460 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1013], [1015], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 01:28:42,558 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:28:42,559 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 01:32:46,541 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 01:32:46,542 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 01:32:46,543 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 01:32:46,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:32:46,544 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 01:32:46,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:32:46,555 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 01:32:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:32:46,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 01:32:46,802 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 01:32:47,003 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 01:32:47,003 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:32:47,009 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:32:47,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:32:47 BoogieIcfgContainer [2018-11-07 01:32:47,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:32:47,011 INFO L168 Benchmark]: Toolchain (without parser) took 270781.96 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -115.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 01:32:47,012 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 01:32:47,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1256.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 01:32:47,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 192.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -867.6 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:32:47,014 INFO L168 Benchmark]: Boogie Preprocessor took 151.69 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. [2018-11-07 01:32:47,015 INFO L168 Benchmark]: RCFGBuilder took 4784.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 255.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:32:47,016 INFO L168 Benchmark]: TraceAbstraction took 264391.46 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 502.3 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 422.7 MB). Peak memory consumption was 925.0 MB. Max. memory is 7.1 GB. [2018-11-07 01:32:47,021 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1256.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 192.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -867.6 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.69 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 4784.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 255.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 264391.46 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 502.3 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 422.7 MB). Peak memory consumption was 925.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1596]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1596). Cancelled while BasicCegarLoop was analyzing trace of length 219 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 264.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 15.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1250 SDtfs, 2959 SDslu, 772 SDs, 0 SdLazy, 5478 SolverSat, 956 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5483occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 244.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 273 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1019 NumberOfCodeBlocks, 1019 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1014 ConstructedInterpolants, 0 QuantifiedInterpolants, 529028 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 35/35 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown